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.

1

A gorilla suit

Image: ARTISTIC FRAMES

Space can get boring. It got a little more entertaining for astronaut Scott Kelly in 2016, when his twin brother, Mark Kelly, sent him a vacuum-sealed gorilla suit all the way to the ISS for his birthday.

Kelly’s crewmates didn’t know about it, so he had fun pranking them by suddenly appearing in the suit aboard the station. One of the prank videos went viral. As Kelly put it: "How can you not like space gorilla?"

2

Dirt from Yankee Stadium

Image: Chanan Greenblatt

Astronaut Garrett Reisman, a lifelong Yankees fan, of course, took a little piece of the Bronx to orbit . In 2008, aboard Space Shuttle Endeavour on mission STS-123, he brought a vial of dirt from Yankee Stadium’s pitcher’s mound—along with other Yankees memorabilia, including items autographed by players.

3

Amelia Earhart’s watch

Image: Tomas Martinez

In 2010, astronaut Shannon Walker brought Amelia Earhart’s watch to the International Space Station. The legendary aviator had worn it during two transatlantic flights , and it traveled to space on the 82nd anniversary of her first historic solo flight across the Atlantic.

4

Pizza

Image: Alan Hardman

Space pizza finally became a reality in 2001, when Pizza Hut paid millions to deliver a vacuum-sealed pizza to the International Space Station.

It was, quite literally, a publicity stunt out of this world . The pizza—topped with salami to withstand space conditions—was eaten by Russian cosmonaut Yuri Usachov aboard the ISS.

5

Pieces of the Wright Brothers’ first plane

Image: History in HD

Tucked into Neil Armstrong’s spacesuit was a small piece of fabric and a fragment of wood from the Wright Brothers' 1903 Flyer—carried all the way from Kitty Hawk to the Sea of Tranquility . He took them with him as he became the first person to step onto the Moon in 1969.

6

A set of instruments to play "Jingle Bells"

Image: Ali Rashedi

Just before Christmas in 1965, astronauts Wally Schirra and Tom Stafford pulled off a surprise serenade in space.

They had smuggled a harmonica and a set of sleigh bells aboard their Gemini 6A mission and played "Jingle Bells" for Mission Control—creating the first musical performance ever in space . The instruments are now on display at the Smithsonian Institution.

7

Several LEGO pieces

Image: Eugene Chystiakov

NASA's collaboration with LEGO took a literal leap when, in 2011, sets of LEGO bricks were sent to the International Space Station aboard mission STS-133.

Astronauts assembled models—such as the Hubble Space Telescope—in microgravity, engaging students around the world in STEM education.

8

A Buzz Lightyear toy

Image: Brian McGowan

Buzz Lightyear truly went " to infinity and beyond " when a 12-inch action figure flew aboard Space Shuttle Discovery in 2008. Spending 15 months on the International Space Station, Buzz was part of NASA’s educational outreach efforts.

Upon return, he was honored with a parade at Disney World and now resides in the Smithsonian’s National Air and Space Museum.

9

A lightsaber

Image: superneox lightsaber

In a nod to sci-fi fandom, a lightsaber prop used by Mark Hamill in Return of the Jedi journeyed to space aboard Space Shuttle Discovery in 2007.

The initiative celebrated the 30th anniversary of Star Wars , symbolizing the intersection of science fiction and real-world space exploration.

10

Dinosaur bones

Image: Jesper Aggergaard

In 1985, during NASA's SpaceLab 2 mission, astronaut Loren Acton brought aboard a fossilized bone and a piece of eggshell from Maiasaura peeblesorum , a dinosaur species known for nurturing its young.

These fossils, discovered in Montana , were sent to space to symbolize the connection between Earth’s prehistoric life and space exploration.​

11

Communion bread and wine

Image: James Coleman

In a very profound gesture, Buzz Aldrin privately took Christian communion aboard Apollo 11. As a Presbyterian elder , he carried a tiny wafer and a small pouch of wine, blessing them while orbiting the Moon shortly after the lunar landing.

12

Golf clubs (and golf balls)

Image: Peter Drew

During Apollo 14, Alan Shepard secretly packed a makeshift 6-iron —a golf club head duct-taped to a lunar tool—and two golf balls.

On live TV, he took a couple of awkward, one-handed swings while wearing his stiff spacesuit. The first ball flopped; the second soared "miles and miles," Shepard joked. It actually traveled about 40 yards, which is quite impressive in lunar terms.

1

Lewis and Clark (1804–1806)

Image: Museum of New Zealand Te Papa Tongarewa

Everybody knows about Lewis and Clark and their glorious quest across the nation, but what most don’t know is that they originally set out to find a continuous water route, the fabled Northwest Passage, from the Mississippi River to the Pacific Ocean. Commissioned by President Jefferson, the journey was meant to open up western trade routes.

Although they reached the Pacific, they confirmed that no such navigable waterway existed. Their journey was a landmark of exploration, but their primary goal remained unaccomplished .

2

Lady Franklin Bay Expedition (1881–1884)

Image: David BP

The 1881 Adolphus Greely-led expedition aimed to establish a scientific research station in the high Arctic and gather meteorological and astronomical data as part of the First International Polar Year.

But two relief ships failed to reach them due to ice. Stranded for over two years, only 7 of 25 men survived. While some data was collected, the mission was a logistical and human failure .

3

Frederick A. Cook (1908)

Image: Roxanne Desgagnés

American explorer Frederick Cook claimed he reached the North Pole in 1908, beating Robert Peary by a year. His announcement stirred immediate controversy and public excitement.

However, Cook failed to provide verifiable proof, and his claim was largely discredited . He also falsely claimed the first ascent of Denali. His goals, while grand, were never validated .

4

Amelia Earhart (1937)

Image: Shaun Bell

Amelia Earhart sought to be the first woman to fly around the world along the equator. Her journey was a bold attempt to push the limits of aviation and global navigation.

Tragically, she vanished over the Pacific near Howland Island. Despite massive search efforts, neither she nor her plane was found. Her historic goal remains unfulfilled .

5

USS Jeannette Expedition (1879–1881)

Image: Hector John Periquin

The Jeannette Expedition set out to reach the North Pole via the Bering Strait, based on a theory that a warm current could carry ships through the ice.

Instead, the ship was trapped and crushed by ice. The crew made a desperate trek across Siberia, with many dying from exposure and starvation. The pole was never reached , and the voyage ended in tragedy.

6

Crocker Land Expedition (1913–1917)

Image: Annie Spratt

Backed by Robert Peary’s reports, this expedition aimed to locate "Crocker Land," a supposed Arctic landmass seen on a prior voyage.

After weeks of travel, they discovered it was a mirage. The team was stranded for years due to failed rescue attempts. Their quest failed because the land never existed .

7

American Karakoram Expedition (1953)

Image: Daniel Born

Led by Charles Houston, the expedition aimed to be the first to summit K2, the world’s second-highest mountain after Everest. The team climbed high and established advanced camps.

Trapped by a severe storm, they made a heroic retreat. One climber died, and the summit remained out of reach . Their attempt was noble, but ultimately unsuccessful.

8

Ziegler Polar Expedition (1903–1905)

Image: ArcticDesire.com Polarreisen

The abundance of Arctic expeditions on this list is not a coincidence. This area is tough to traverse, and much of it remains unknown. This particular expedition sought to reach the North Pole via Franz Josef Land. The crew wintered in the Arctic with supplies and dogs for the attempt.

Severe ice and harsh conditions thwarted their progress. They were stranded for two years and never neared the pole. Though most survived, the mission failed in its main goal .

9

Zebulon Pike (1805)

Image: Mathew Benoit

In 1805, Army officer Zebulon Pike was tasked with exploring the headwaters of the Mississippi River. The goal was to identify its true source and assert U.S. presence in the newly acquired Louisiana Territory.

Facing poor maps, freezing conditions, and supply shortages, Pike never reached the actual source . Though he gathered useful data, the mission failed to meet its primary objective.

10

American China-Everest ’82 Expedition (1982)

Image: Andreas Gäbler

Led by Lou Whittaker, this team aimed to summit Mount Everest via the remote Chinese (Tibetan) side, which was an unusual and challenging route for American climbers at the time.

Despite significant progress, they turned back just 1,500 feet from the top due to difficult conditions. The summit remained unreached .