Places AlwaysKaitlyn Wants to Go

The ruins of this once-grand mansion are linked to one of the country’s most popular clothing brands.

The seamy, underground secrets of Portland's criminal past.

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

This historic patch of real estate offers a glimpse of colonial Boston.

This nondescript building hides an entrance to an underground nuclear tunnel system.

A subterranean Holocaust refuge within one of the world's longest cave systems.

A labyrinthine underworld of tunnels and caverns hides beneath the city.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

A medieval military street hidden beneath a charming French fishing village.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.

The medieval network of canals hidden underneath the city is opened to explorers each year.

A painfully obvious spy house sits right across the street from the Russian Embassy.

Visit these gentle, bell-bottomed, exquisite equines at the home of North America's first Gypsy Vanner horses.

What started as a tailor shop to help swimmers live their mermaid dreams has grown into a full-scale aquarium, complete with live mermaid shows.

This salad has two key ingredients: hearts of palm and green ice cream.

This restaurant is devoted to celebrating Appalachia's cuisine.

Erosion has transformed this sandstone boulder into a massive dune-filled cavern.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Mile-long cave system near Great Smoky Mountains.

This chestnut box will not be opened until the country music legend's 100th birthday in 2046.