A fantastic castle rumored to be the birthplace of King Arthur.

According to legend, King Arthur killed a beast that dwelled beneath the waters of this Welsh lake.

This twisty sign depicts the chain's first logo.

A unique attraction and museum dedicated to exploring iconic roadside structures.

The original movie set for the home of 'Star Wars' hero Luke Skywalker.

Made famous by 'Star Wars,' these troglodyte homes face an uncertain future.

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A series of magical limestone formations along the coastline of the country island of Antigua.

Try the frozen treat that inspired Arrested Development's famous banana stand.

Live long and prosper in Tennessee.

A unique botanical garden housed in three giant geodesic domes.

Someone really, really wanted to save this fast-food icon from demolition.

A luxurious doomsday bunker hidden beneath an unassuming Las Vegas home offers the best of subterranean suburbia.

A blast of nostalgia awaits visitors to this miniature indoor raceway.

Located more than 600 feet beneath sea level, this tunnel boasts the world's first undersea roundabout.

This stunning sea creature-shaped home blends into the landscape like a fantasy villa.

A unique piece of graffiti offers a little slice of local history and mystery.

This (occupied) house is 10 feet wide and full of spite.

The highest tides in the world come in and out here twice a day, allowing you to essentially walk along the ocean floor.

A futuristic-looking beach house built for the owner of a snack food brand.

A replica of fossils believed to be the first scientifically-described dinosaur bones found in North America.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

A man's home is his castle.