Surreal riveted sea forts once protected the Kent shores from German attack.

The world's largest maze is a nature park with nearly 200 decision points.

A record-breaking pool that uses computers to turn ocean water into cleaner, private swimming water.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

An idle pastime becomes a record holder in Boys Town, Nebraska.

Largest illuminated advertisement sign in the world.

Holding the current title of "biggest chair in the world," it stands with little fanfare in Lucena, Spain.

A quirky collection flush with information on commode culture from ancient times to modern day.

Senators used to relax in the nearly forgotten marble tubs now hidden in the U.S. Capitol Building's basement.

Looking for a crappy restaurant? Pull up a porcelain bowl and enjoy your meal.

Where once there was a train station bathroom, there is now this German burger joint.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

This mesmerizing, colorful structure looks like a tent made from stained glass.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

This 18th-century folly is one of Europe's rare "garden mosques."

The largest medieval water tank on the Iberian Peninsula is preserved beneath the Cáceres Museum.

In Zanzibar, a historic 19th-century palace is a reminder of the world's shortest war.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

These bleak 800-year-old ruins were once the royal residence of choice for hunting in Sherwood Forest.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

The most famous location in China was home to whole dynasties worth of imperial rulers.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

A subterranean shelter remains intact under a busy Paris railway station.