This giant Cold War satellite dish has become a symbol of Trinidad's need for sovereignty.

Before becoming a public park, this spot was a shell midden, a fort, and an amusement park.

This Garden District mansion was built to be bigger and grander than its original owner's former partner turned rival.

Inside, ancient treasures. Outside, modern contradictions.

This chicken coop pays homage to a classic architectural style made famous throughout the southern United States.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

Admire impressively detailed models of everything from a Pennsylvania Dutch kitchen to the world's smallest Swiss Army Knife.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

On the Hudson resides one of the largest clocks in the world.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

A once-groundbreaking power plant turned into a hotel and mini-museum of archeological and geological wonders.

Prehistoric animals decorate this popular outdoor park.

The world's longest known cave system.

A phallic shrine to a princess goddess in Krabi, Thailand.

A natural swimming hole that was once a ceremonial center for Mayan priests.

Georgia's first brewery is also one of its oldest surviving buildings.

Semi-recognized center of the world, with many oddities.

Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

One man's ambition created this psychedelic log home.

A pink and gray pair of pachyderms advertise a fireworks shop.

This small memorial is almost as well concealed as Smalls himself was on the night he sailed to freedom.