The final resting place for the remains of 143 Habsburg royalty.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

The topiary maze at the Habsburg hunting lodge.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

Central Europe's largest collection of mini-bottles is on display at this museum devoted to a bitter Hungarian liquor.

Museum dedicated to the terror regimes of Hungary.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

Once the home of a hermetic monk, this cave now houses a small church.

The ruins of a once-thriving sugarcane plantation that was burned in the Second Seminole War.

The celebrated eyesore created by starry-eyed sweethearts.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

It's a pretty creepy lock-up.

An extensive collection of fine art devoted to man's best friend.

This is not your typical jungle gym.

This spot in St. Louis, marked with a simple sign, has seen more pro baseball than just about anywhere else in the world.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.