The romantic botanic tunnel feels like a well-kept secret.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

A forgotten graveyard lost in the tangles of an overgrown garden.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

A fake Transylvanian castle houses a cathedral of antlers.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

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

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

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

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

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

A rare view of a preserved Victorian science museum.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The remnants of an archaeological camp stand within Tikal National Park.

A devastated ruin in the south of Belize where British explorers claimed to unearth the Mitchell-Hedges Crystal Skull.

This portion of a lovely Belize beach is infested with (harmless) sharks and rays.

A massive underwater sinkhole made famous by Jacques Cousteau.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.