These barriers stand as stark reminders of Northern Ireland's troubled past.

Given just one more year to live, Conrad Schuck built his dream house in Bartow, Florida.

Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.

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

This whimsical home made entirely from clay is basically a giant piece of pottery.

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

This controversial museum includes such detested exhibits as a chocolate suicide bomber and fecal-smelling digestion machine.

Elvis's own personal tropical hideaway.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

Tubing through a cave lit with glowworms is a magical underground experience.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

Disney World's very first waterpark is now an abandoned ruin being reclaimed by the swamp.

The scuba diving training facility was named for the steam that rises from the cave's chimney.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

This picturesque mansion has gone from opulent ruin to nature museum.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.

An odd little fishing town that is inundated by tourists looking to be locked up in a cage and surrounded by great white sharks, because why not?

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

Come for the flowers, stay for the bats!

A multi-storied adobe complex has been inhabited for more than a thousand years.