1

Lake Superior lives up to its name

Image: Jacob Skowronek

Lake Superior is the largest, deepest, and coldest of the five. It holds more water than the other four lakes combined—enough to cover North and South America in a foot of water. At 31,700 square miles, it’s the largest freshwater lake by surface area in the world.

2

Only one is fully American

Image: Ioann-Mark Kuznietsov

Lake Michigan is the only Great Lake entirely within the jurisdiction of the United States. It touches four states—Wisconsin, Illinois, Indiana, and Michigan—and its shores are home to major cities like Chicago and Milwaukee. As if this wasn’t enough, this lake also boasts the world’s largest freshwater sand dunes.

3

They create their own weather

Image: Srikanta H. U

The Great Lakes have a powerful influence on regional weather, especially through the phenomenon of "lake-effect snow." As cold air sweeps over the warmer lakes, it picks up moisture, resulting in heavy snowfall in cities like Buffalo, Cleveland, and Chicago. The lakes also generate localized storms that can rival oceanic tempests in intensity. Yet, not all is harsh; these unique conditions help create microclimates that are perfect for agriculture, supporting a range of crops across the region.

4

A shipwreck graveyard

Image: Vlad Tchompalov

Prone to stormy and unpredictable weather, the Great Lakes are home to over 6,000 shipwrecks. The most infamous of these, the SS Edmund Fitzgerald, sank in Lake Superior during a violent storm in 1975, inspiring Gordon Lightfoot's iconic ballad. In fact, many of these wrecks are remarkably well-preserved, thanks to the cold freshwater, which slows down the decay process and keeps these sunken ships intact for decades.

5

They contain a fifth of the world’s freshwater

Image: Sime Basioli

The Great Lakes hold about 21% of the world's fresh surface water. That’s roughly six quadrillion gallons—enough to submerge the lower 48 states under about 10 feet of water. Given this staggering quantity, it's no surprise that the lakes are crucial to American drinking water, agriculture, and industry.

6

The Erie Canal’s role

Image: Lucy M

Opened in 1825, the Erie Canal linked the Great Lakes to the Atlantic Ocean via the Hudson River, transforming trade and settlement patterns. It played a pivotal role in making New York City an economic powerhouse and significantly accelerated the movement of goods between the Midwest and the East Coast. While most traffic now flows through the larger St. Lawrence Seaway, the Erie Canal remains a key chapter in U.S. history.

7

When the Niagara Falls stood still

Image: Vishwesh Jirgale

In 1969, engineers temporarily halted the flow of Niagara Falls due to concerns that erosion was progressing so rapidly the falls could disappear in a few years. After a thorough inspection by the Army Corps of Engineers, they concluded that no immediate maintenance was necessary. Despite this, the endeavor was far from futile—it provided valuable insights that would guide future preservation efforts for the iconic falls.

8

America’s forgotten "Third Coast"

Image: Richard Main

The Great Lakes coastline spans about 10,900 miles, which makes it longer than the U.S. East and West Coasts combined. This hidden "Third Coast" features sandy beaches, towering cliffs, and picturesque lighthouses, making it a popular destination for tourism and outdoor recreation.

9

Once an ancient ocean

Image: Andrzej Kryszpiniuk

Millions of years ago, the region now holding the Great Lakes was covered by an ancient sea. Over time, glaciers carved out the massive basins, which filled with meltwater after the Ice Age. The evidence of this transformation is still visible in the region’s fossils and rock formations.

10

Chicago River’s historic reversal

Image: Jake Leonard

In 1900, engineers reversed the flow of the Chicago River to prevent sewage from polluting Lake Michigan, the city’s drinking water source. Using a system of canals, the river was redirected toward the Mississippi River watershed, an astonishing feat of engineering that still works to this day.

11

Protected by an international treaty

Image: Hermes Rivera

The 1909 Boundary Waters Treaty between the U.S. and Canada governs the Great Lakes, ensuring cooperative water management. It led to the creation of the International Joint Commission, which helps both nations resolve disputes and protect this vital natural resource.

1

Grand Canyon, Arizona

Image: Tim Hart

A natural monument of unparalleled beauty, painstakingly carved over millions of years by the Colorado River , The Grand Canyon’s layered bands of red rock reveal more than just a part of the history of the land, but also offer a humbling window into deep time and Earth’s origins.

President Theodore Roosevelt himself was one of the foremost advocates for the preservation of the Grand Canyon area , frequently visiting to hunt and revel in its natural beauty. Before the arrival of Europeans, the area was continuously inhabited by various Native American groups, who often dug and carved their settlements directly into the ancient rock.

2

Yosemite Valley, California

Image: Robby McCullough

Located in the western Sierra Nevada mountains of Central California, Yosemite Valley’s granite cliffs, towering waterfalls, and ancient sequoias draw millions of visitors each year. Shaped by the action of glaciers during most of the last 30 million years , today its lush forests and incredibly diverse fauna are a living monument to our country’s biodiversity.

The towering granite peaks that encircle the valley, including Half Dome and El Capitan , are famed for their impressive rock walls and the breathtaking vistas they offer to hikers from above.

3

Yellowstone National Park, Wyoming

Image: Nicolasintravel

A geothermal wonderland, home to geysers, hot springs, and bubbling mud pots , Yellowstone is a wildlife haven where bison, grizzly bears, and wolves roam freely amidst its stunning natural features. Moreover, Yellowstone not only holds the distinction of being the first national park in the U.S. but also in the whole world, setting a precedent for conservation laws and standards that would be emulated worldwide.

Interestingly, the Yellowstone Caldera—the volcanic system responsible for the park’s intense geothermal activity—is the largest in North America and is considered a dormant "supervolcano." In the past, large eruptions from this region likely contributed to the extinction of many species, blanketing much of central North America in ash.

4

Denali National Park, Alaska

Image: Bryan Goff

At the heart of Alaska lies Denali, North America's tallest peak. Officially named Mount McKinley until 2015, the peak was renamed after the native word for the mountain, which fittingly means "the high one."

The region surrounding the legendary mountain became a National Park in 1917 , and since that time the rugged landscape of the park has been a haven for outdoor enthusiasts, offering unique opportunities for wildlife viewing. The pristine landscape features a diverse mix of forests, deciduous taiga, tundra, and glaciers , preserving a slice of untouched wilderness that highlights the raw, untamed beauty of Alaska.

5

Great Smoky Mountains, North Carolina/Tennessee

Image: Div Pithadia

With its mist-shrouded peaks and verdant forests, the Great Smoky Mountains are one of the most scenic and alluring landscapes of the United States.

A subrange of the Appalachian Mountains, the soothing vistas of lush forests growing above the ancient peaks are often veiled by a hazy blue-ish mist , which gives the name to the region. The mysterious fog is caused by various organic compounds emitted by the lush vegetation, which end up forming dense vapor columns.

6

Zion National Park, Utah

Image: Jamie Hagan

Zion's breathtaking sandstone formations are truly a sight to behold. The region is renowned for its towering cliffs, narrow slot canyons, expansive mesas, and captivating natural arches , each sculpted by the forces of time and nature into awe-inspiring works of art.

With a geological history that spans over 150 million years , Zion National Park is a testament to the immense geological forces that have shaped our land over millennia.

7

Niagara Falls, New York

Image: Kalen Emsley

One of the world's most famous waterfalls, Niagara Falls is an emblem of America’s diverse natural beauty. Straddling the international border between Canada and the United States, millions of gallons of water cascade over its cliffs every minute , drawing visitors from both nations to marvel at this awe-inspiring natural spectacle.

Formed by the Niagara River, which channels the waters from Lake Erie into Lake Ontario before ending up in the Atlantic, the falls experience a rate of erosion of almost a foot per year. If the erosion continues at this pace, in about 50,000 years the falls will completely erode the remaining 20 miles to Lake Erie and cease to exist.

8

Glacier National Park, Montana

Image: Justin Kauffman

One of the most pristine landscapes in the United States, Glacier National Park harbors ancient peaks and valleys that provide sanctuary to a diverse array of wildlife, home to thousands of unique species.

With more than one million acres, several glaciers, and over a hundred named lakes, this landscape offers a glimpse into the untouched beauty that greeted the first inhabitants of this land upon their arrival.

9

Acadia National Park, Maine

Image: Benjamin R.

Maine’s Atlantic coastline offers a stunning landscape of timeless beauty and rich history. From the towering Cadillac Mountain - the highest peak on the Atlantic coast - to the U-shaped valleys, and cobble beaches, Acadia's natural wonders are captivating.

Inhabited over 10,000 years ago by the Wabanaki people, Acadia's story is full of tales of exploration and resourcefulness. Amidst the harsh terrain, John D. Rockefeller Jr.'s historic carriage road system still meanders , a testament to human resilience amidst nature's raw beauty.

10

Hawaiʻi Volcanoes National Park, Hawaiʻi

Image: Cedric Letsch

If you are eager to witness the true raw power of nature in action, Hawaiʻi Volcanoes National Park is the place to go. Home to two of the world's most active volcanoes, Kilauea and Mauna Loa , the park is teeming with primeval scenes and dramatic contrasts. From lava tubes to lush rainforests and stunning beaches, the islands abound with natural wonders.

Acknowledging its unique natural attributes, the park earned the prestigious designation of International Biosphere Reserve in 1980, followed by World Heritage Site status in 1987.

1

Vanderbilt Mansion

Image: Michael Denning

The Vanderbilt Mansion was one of several homes owned by Frederick William Vanderbilt and his wife Louise Holmes Anthony. Built between 1896 and 1899, this 54-room marvel is an excellent example of the Beaux-Arts architectural style , characterized by its grandeur and ornate detailing. In addition, the mansion's interiors are representative of the American Renaissance.

Historically known as Hyde Park, the estate includes 211 acres and is built on a hilltop overlooking the Hudson River. It includes well-groomed flowerbeds, formal gardens, woodlands, and ancillary buildings. In 1940 the Vanderbilt Mansion was designated a National Historic Landmark. Today it’s a historic house museum operated by the National Park Service.

2

Hildene Mansion

Image: sarahlawrence603

Hildene Mansion was built in 1905 by Robert Todd Lincoln, eldest son of President Abraham Lincoln. This Georgian Revival-style mansion is set on a 200-foot promontory, which offers a panoramic view of the Battenkill Valley. The name "Hildene" comes from Old English words meaning "hill" and "valley with stream".

Hildene Mansion remained in the possession of the Lincoln family until 1975. Then, in 1978, the property was acquired by a non-profit organization that restored it, preserving its historic integrity. Today this former summer home is one of Vermont's most popular tourist attractions. Visitors can wander around the large estate and contemplate its opulence: from the grand entry staircase to the original furnishings.

3

Swan House

Image: Michael Starkie

Swan House, located in Atlanta, Georgia, is a historic mansion built in 1928 by Edward and Emily Inman, heirs to a cotton fortune. The mansion's eclectic design combines neo-Renaissance styles with a classical approach. The 28-acre estate features terraced gardens and a cascading fountain on the hillside. Carved or painted swans are a recurring motif throughout the house and gardens.

In 1966, the Atlanta Historical Society acquired the house and grounds. Today, Swan House is part of the Atlanta History Center and operates as a museum documenting 1920s American history. Many of the Inmans' original furniture pieces are still on display, offering visitors a glimpse into the past.

4

Hearst Castle

Image: Mike Hsieh

On the west coast, halfway between San Francisco and Los Angeles, there’s a magnificent mansion, a combination of a medieval castle , a Spanish cathedral , and a Roman temple. Hearst Castle is the result of the feverish dreams of one of the greatest tycoons of the 20th century: William Randolph Hearst.

Facing the Pacific Ocean, this four-building palace has 175 rooms, 40 bathrooms, and gigantic extensions of gardens. An immense semicircular outdoor swimming pool, a private zoo, tennis courts, a huge Gothic-style library, a movie theater, and an airfield are also part of this estate that took almost thirty years to build. Once visited by the most prominent Hollywood stars and politicians of the time, today Hearst Castle is registered as a National Historic Landmark and functions as a museum.

5

Ca d’Zan

Image: Tessa Edmiston

This estate located on the shores of Sarasota Bay was once the exquisite winter residence of American circus magnate John Ringling and his wife Mable. The majestic Ca' d'Zan —Venetian for "John's House"— is an incredible Mediterranean-style architectural beauty built in 1926 to resemble a palace on the Grand Canal in Venice.

The extravagant 5-story building is adorned with stained glass, stucco, and terra cotta details. It features 56 rooms, an 82-foot observation tower, and an impressive marble terrace overlooking the ocean. This residence, an icon of the Florida Boom Years of the 1920s, was restored by the state and opened to the public in 2002.

6

Old Westbury Gardens

Image: Jialin Hu

Old Westbury Gardens, listed on the National Register of Historic Places, is located in Nassau County on New York's Long Island peninsula. The 23-room estate was once the home of businessman John S. Phipps, his wife Margarita Grace, and their four children.

Completed in 1906 by English designer George A. Crawley, the magnificent Charles II-style mansion is set amid 160 acres of formal gardens, woodlands, ponds, and lakes. This former private estate is now a museum that can be visited from April through October. It is also regularly used for cultural events, private parties, and as a film set for Hollywood productions.

7

Oheka Castle

Image: Peter Oswald

Believed to have inspired "The Great Gatsby," Oheka Castle is the largest private home in New York and the third largest in the United States. Although now it’s a hotel, this estate was once the country home of financier and philanthropist Otto Hermann Kahn and his family. In fact, the name "Oheka" is an abbreviation derived from the first letters of his name.

The mansion, located on the North Shore of Long Island in West Hills, New York, was built between 1914 and 1919. In recent years Oheka Castle has gained popularity as a wedding venue for socialites and celebrities and was used for photo shoots , films , and television series. The castle also houses a bar and a restaurant and offers guided tours for regular visitors.

8

Lyndhurst Mansion

Image: Pixabay

Designed in 1838 by the famous American architect Alexander Jackson Davis, Lyndhurst Mansion is a remarkable example of Gothic Revival architecture. This country house is located in Tarrytown, New York, along the Hudson River, and was owned by New York Mayor William Paulding Jr, merchant George Merritt, and railroad magnate Jay Gould.

In 1961, Gould's daughter, Anna Gould, donated it to the National Trust for Historic Preservation. In 1966, Lyndhurst was recognized as a National Historic Landmark, a testament to its historical and architectural significance. Today, the house is open to the public, allowing visitors to explore its unique features and learn about its rich history.

9

Villa Vizcaya

Image: Zoshua Colah

Between 1914 and 1923 philanthropist and conservationist James Deering built this sumptuous mansion as his winter home. Born in South Paris, Maine, Deering suffered from anemia, so his doctors recommended that he seek refuge in a sunny, warm climate. South Florida was the perfect place to recuperate. He lived in Miami until his death in 1925.

In the mid-20th century, the county took possession of the complex and its extensive Italian Renaissance gardens and began operating as a museum. Over the years Villa Vizcaya has hosted countless historic events, such as the meeting between Ronald Reagan and Pope John Paul II, and the first Summit of the Americas. In 1994 it was designated a National Historic Landmark and today is open to the public for tours.

10

The Biltmore Estate

Image: Stephanie Klepacki

In the Blue Ridge Mountains of Asheville, North Carolina stands a true architectural marvel: the Biltmore Estate. At more than 178,926 square feet, this legendary residence with 250 rooms, 35 bedrooms, 43 bathrooms, and 65 fireplaces is the largest privately owned house in the country . Biltmore Estate is also a monument that reflects the grandeur and luxury of the American Gilded Age.

Inspired by the landscape, George Washington Vanderbilt, grandson of industrial titan Cornelius Vanderbilt, set out to build an estate that would combine European elegance with American nature. Designed in the Châteauesque style, the mansion —which reportedly cost $5 million (equivalent to about $183 million today)— was finally inaugurated on Christmas Eve of 1895. Today, the Biltmore Estate attracts millions of visitors every year who are amazed by its architectural splendor and history.