1

Great Basin National Park, Nevada

Image: Yura Lytkin

Tucked away in eastern Nevada, Great Basin is the park that time forgot—in the best way possible. You can hike to a glacier, explore underground caverns, and camp under skies so dark you’ll see stars you didn’t even know existed , all without waiting in line or fighting for a decent photo spot.

2

Congaree National Park, South Carolina

Image: Selma Rizvić

This park protects one of the largest remaining expanses of old-growth bottomland hardwood forest in the United States, which is a fancy way of saying it's got trees so tall and old they make you feel like an ant at a giant's picnic. The real magic happens at night, when the fireflies put on a light show that'll make you forget all about mosquito bites. Plus, you can rent a canoe and paddle through what feels like the set of a Southern Gothic novel—Spanish moss and all.

3

North Cascades National Park, Washington

Image: Pete Alexopoulos

With jagged mountain peaks and more than 300 glaciers, this park offers scenery that’ll make your camera work overtime . The hiking ranges from "pleasant afternoon stroll" to "why did I think this was a good idea?" so there's something for everyone, assuming everyone likes being surrounded by absurdly gorgeous wilderness.

The best part? While everyone's fighting over hotel rooms near Mount Rainier, North Cascades sits there looking spectacular with hardly anyone around. The park sees fewer visitors in an entire year than Yellowstone does on a busy weekend.

4

Dry Tortugas National Park, Florida

Image: Nick Rickert

Located 70 miles off the coast of Key West, Dry Tortugas takes "off the beaten path" to a whole new level: you literally need a boat or seaplane to get there. The turquoise waters are so clear you could see fish judging your swimming technique from 30 feet away . Plus, there's Fort Jefferson, a massive 19th-century fort that feels like someone plopped a Civil War–era fortress in the middle of paradise and said, "Sure, that works."

Just remember: there’s no fresh water (hence the "Dry" part), no food service, and no shade except what you bring yourself. It’s like camping, but surrounded by the kind of blue water that makes you understand why people write songs about the ocean.

5

Guadalupe Mountains National Park, Texas

Image: Ryuta F.

Home to the highest peak in Texas (Guadalupe Peak at 8,749 feet), this park offers hiking that'll remind your knees they're not as young as they used to be, but in a rewarding way. The fall foliage in McKittrick Canyon is legitimately stunning , which surprises people who assume Texas is all tumbleweeds and barbecue joints.

The park sits on an ancient fossil reef from when this whole area was underwater, mind-blowing, if you think about it for more than two seconds. There’s no cell service, limited facilities, and the nearest town is about an hour away, which may sound like a complaint, but it actually forces you to unplug and take in the amazing place around you.

6

Voyageurs National Park, Minnesota

Image: Vyacheslav Makushin

Voyageurs is a water-based park that’s basically a summer camp for adults who can legally drink beer. With over 200,000 acres—about 40% of it water—houseboating is the way to experience it.

The fishing here is legendary, the northern lights make regular appearances, and in winter, the frozen lakes become highways for snowmobiles and cross-country skiers . It's remote enough that you feel like an explorer, but accessible enough that you won't actually die if you forget your matches.

7

Black Canyon of the Gunnison National Park, Colorado

Image: Dustin Weist

Colorado has so many stunning places that Black Canyon somehow gets overlooked. This canyon is deep, narrow, and so dramatically steep that parts of it only get 33 minutes of sunlight a day . The Gunnison River carved through 2 billion years of rock to create towering walls that make you feel appropriately insignificant, which is good for the soul occasionally.

8

Isle Royale National Park, Michigan

Image: Ivan Vashchenko

If you want to really get away from it all, Isle Royale is your jam: an island in Lake Superior that requires either a ferry ride or a seaplane to reach. Once you’re there, you’re committed; same-day visits aren’t really a thing. The park is car-free, crowd-free, and home to a fascinating wolf-and-moose study that’s been running since 1958.

The hiking trails crisscross the island through forests and along rocky shorelines where the lake looks more like an ocean . Backcountry camping is the main event here, and the solitude is so profound you'll hear sounds you forgot existed—like actual silence.

9

Pinnacles National Park, California

Image: Cyrus Crossan

California's newest national park is a playground of volcanic spires, talus caves, and rock formations that look like a giant was playing with clay and just walked away mid-project . The rock climbing here is world-class, and the cave exploration doesn't require any special gear—just a flashlight and a willingness to squeeze through some tight spaces.

The spring wildflower displays are spectacular, and the park is one of the best places to see the endangered California condor, which has a wingspan that makes eagles look modest. It gets hot in summer—and by hot, I mean "surface of the sun" hot—so plan accordingly.

10

Lassen Volcanic National Park, California

Image: Robson Hatsukami Morgan

This park sits on top of one of the world’s largest plug-dome volcanoes—and yes, it could erupt again—Lassen Peak last blew in 1915, which in geological time is basically yesterday. But don't let that stop you from enjoying the bubbling mud pots, steaming fumaroles, and hot springs that make you feel like you're walking on another planet .

The hiking is fantastic, with everything from easy boardwalk strolls through geothermal features to challenging climbs up Lassen Peak itself. Add in alpine lakes, wildflower-filled meadows, and a fraction of Yosemite’s crowds (despite being just a few hours south), and you’ve got a spectacular California secret.

1

The Cardiff Giant

In 1869, workers digging a well in Cardiff, New York, uncovered what appeared to be a 10-foot-tall petrified man. Locals rushed to see the "giant," paying admission to witness history in the soil.

But, as it turned out, it wasn’t ancient at all. A man named George Hull had buried the statue as a prank and made some quick money from the curious crowd.

2

War of the Worlds Broadcast

This very famous hoax took place on the eve of Halloween 1938. Orson Welles’s radio adaptation of The War of the Worlds aired as if it were breaking news . Many listeners tuning in late thought Martians had really landed in New Jersey.

Some packed up their cars or called the police in panic. Though no invasion occurred, the broadcast became a legend in media history.

3

The Balloon Boy

In 2009, Americans watched live TV coverage of a silver balloon drifting across the skies of Colorado , fearing that a six-year-old boy was trapped inside . The story gripped the nation for hours.

When the balloon finally landed empty, police discovered the child hiding safely at home. His parents later admitted it was a publicity stunt gone wrong.

4

The Feejee Mermaid

In 1842, showman P. T. Barnum unveiled a marvel: a preserved "mermaid" supposedly from the South Seas . Crowds lined up to see the half-fish, half-woman curiosity.

The truth was stranger still. It was the upper body of a monkey sewn onto a fish tail and covered in papier-mâché.

5

The Great Moon Hoax

Readers of The New York Sun in 1835 were astonished by reports claiming that scientists had spotted bat-like people and crystal palaces on the Moon through a powerful new telescope.

The story was pure invention, but circulation went up. By the time the truth came out, the paper’s readership had reportedly increased dramatically.

6

The Crop Circles Craze

When perfect circles began appearing overnight in wheat fields , people talked about UFO landings. The shapes seemed too precise to have been made by human hands.

But, in 1991, two Englishmen confessed they’d used boards and ropes to flatten the crops. While this revelation explained many of the formations, the mystery lives on in popular imagination.

7

Alien Autopsy Film

In 1995, a grainy black-and-white video surfaced, showing doctors dissecting what seemed to be an alien recovered from the 1947 Roswell crash. The footage spread quickly worldwide.

Years later, the filmmaker admitted that the film was staged, using latex models and fake organs.

8

The Manti Te’o girlfriend hoax

Notre Dame football star Manti Te’o captured hearts when he revealed that his girlfriend had died of leukemia . Sports fans wept over the tragic love story.

But reporters later learned that the woman never existed. It was an elaborate online catfishing scheme.

9

The Patterson–Gimlin Bigfoot film

In 1967, a short film shot in California showed a large, hairy creature striding through the woods . Many viewers thought this was real proof of Bigfoot´s existence.

Decades later, one participant claimed it was a man in a gorilla suit, but that claim failed to convince many people who prefer to believe in the existence of this creature.

10

The Drake’s Plate of Brass

In 1936, a shiny brass plate found in California seemed to confirm that explorer Sir Francis Drake had landed there in 1579. Historians called it a priceless relic.

For decades, the plate was displayed proudly, until metallurgical tests in 1977 proved it was modern . It had been made as a practical joke among historians that went too far.

11

Paul Is Dead

The final entry on our list might not be American per se, but it drew much attention on these shores. In 1969, rumors spread that Beatle Paul McCartney had died and been secretly replaced by a double . Fans scoured album covers for "clues" like hidden messages and backward songs.

Paul, very much alive, later joked about it. The bizarre theory became a lasting pop-culture phenomenon.

1

Dundas Castle, Roscoe, New York

Image: Annie Spratt

Also known as Craig-e-Clair, this castle was built by Ralph Dundas in the early 20th century. It is an architectural marvel of stone and copper.

Dundas died before the castle was completed, and his wife was reportedly committed to a sanitarium shortly after. Consequently, no member of the Dundas family ever actually lived in the mansion. This has led to the "Ghost of Dundas Castle" legends, with locals claiming to see a woman in white wandering the unfinished halls, waiting for a housewarming party that never happened.

2

Rockwell House, Milledgeville, Georgia

Image: Clem Geiss

Built in 1838, the Rockwell House is a stunning example of Federal-style architecture, but its beauty is shadowed by a dark past. It was originally built for Colonel Samuel Rockwell, a prominent lawyer.

Local lore whispers about the "Rockwell Ghost," believed to be a young girl who died during a yellow fever outbreak. However, the house’s most tangible secret lies in its survival; it has endured multiple fires and periods of extreme neglect. In recent years, it has become a focal point for preservationists who uncovered hidden structural reinforcements that suggest the house was built to be an impenetrable fortress of its era.

3

Elda Castle, Ossining, New York

Image: Nitrogel

If the name David Abercrombie sounds familiar, it’s because he co-founded the clothing company Abercrombie & Fitch . But in the 1920s, he also built this granite castle, named Elda (an acronym of his children’s names), as a secluded retreat.

The castle features a network of spiral staircases and open-air porches designed to blend the indoors with the rugged wild. Its abandonment, however, is a sheer tragedy. After the family moved out, the castle was used as a research facility and later fell victim to vandals. Legend has it that a fire in the 1940s was started by squatters, leaving behind a charred stone husk that resembles a medieval ruin more than a 20th-century home.

4

Mongo's Castle, Memphis, Tennessee

Image: Denny Müller

A stark contrast to the classical mansions of the South, Mongo’s Castle was the passion project of Mongo Bebe, a man who built his home out of scrap stone, Ashlar blocks, and found materials.

The house is a maze of folk-art eccentricity. The builder intended it to be a community center and a symbol of African-American heritage and self-reliance. It stands today as a decaying puzzle, with many neighbors still unsure of the structural logic behind its towering, uneven walls.

5

Bannerman's Castle, Pollepel Island, New York

Image: Leonard G., Public domain, via Wikimedia Commons

Rising from the Hudson River, this castle was never intended to be a home; it was a giant advertisement and warehouse for Francis Bannerman VI’s military surplus empire.

In 1920, 200 tons of gunpowder and shells exploded in the castle’s powder house, blowing out a significant portion of the walls. The ground is still considered unstable due to the remnants of military munitions, and the inscriptions on the walls are actually warnings and advertisements for the Bannerman business. Do you dare visit this mansion?

6

Castle Mont Rouge, Rougemont, North Carolina

Image: Florian Delée

This whimsical, onion-domed castle looks like it belongs in the Russian countryside rather than the North Carolina woods. It was designed by sculptor Robert Mihaly, but he ended up abandoning the project in the early 2000s following a personal tragedy and financial hurdles.

The castle remains an "empty sculpture," filled with intricate marble work and unfinished turrets. The bizarre architectural fusion lacks a standard floor plan, making it nearly impossible to convert into a functional residence without destroying its artistic integrity.

7

Ha Ha Tonka Castle, Camdenton, Missouri

Image: Hannah McBride

Robert Snyder, a wealthy Kansas City businessman, began building this European-style castle in 1905. He wanted a retreat that overlooked the breathtaking Ha Ha Tonka Spring.

Yet, Snyder never got to see his dream finished; he was killed in one of Missouri’s first recorded automobile accidents just a year after construction began. His sons finished the castle, but it was gutted by a fire in 1942. There’s a hidden network of caves beneath the castle, which were rumored to be used by outlaws and later as a natural "refrigerator" for the estate’s kitchen.

8

Carleton Island Villa, Cape Vincent, New York

Image: Tama66

This once-magnificent villa was built for William Wyckoff, who made a fortune with the Remington Typewriter Company.

The Secret: Wyckoff’s dream turned into a nightmare on the very first night he stayed in the house. He suffered a massive heart attack and died in his sleep. His wife had passed away a month prior, leaving the villa to a son who had no interest in it. The house has stood empty for over 70 years, its secret being the tragic "cursed" timing that prevented it from ever functioning as a family home.

9

Dicksonia Plantation, Lowndesboro, Alabama

Image: Theo Bickel

Dicksonia was a quintessential antebellum mansion, featuring the massive columns and wrap-around porches synonymous with the Old South.

Unlike many plantations that were destroyed during the Civil War, Dicksonia survived the conflict only to be destroyed by a mysterious fire in 1939. Its "ghost pillars," however, remained standing long after the wooden house burned away. These towering brick columns became a haunting landmark , representing the structural skeletons of a forgotten social order.

10

Wyndcliffe, Rhinebeck, New York

Image: Peter Herrmann

This house is the literal origin of the phrase "Keeping up with the Joneses." Though often referred to as a "Mystery Mansion" by urban explorers, this is the ruin of Wyndcliffe, the estate of Elizabeth Schermerhorn Jones.

Elizabeth’s mansion was so grand and intimidating that it prompted her neighbors—including the Astors—to build even larger homes to compete. The secret of Wyndcliffe is the psychological impact of its architecture; it was built to inspire envy, and its current state of absolute decay is a poetic commentary on the fleeting nature of social status.