Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

According to a local legend, this old castle could only be built after a woman was immured in the walls.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

The hairpin turns in this mountain road take the shape of a letter—is it a coincidence or a symbol of love?

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

The home of the Dead Sea Scrolls is an abstract modernist dream.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

The museum within the Kom-Ombo Temple complex houses mummified crocodiles and mummified crocodile eggs.

A steamer run aground near Bimini lives a second life as a playground for scuba divers.

The world's largest concentrated solar power plant.

The sign that drew attention to a young boy's cucumber stand is now the name of his fruit superstore.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

The behemoth beasts engaged in an epic battle is the second-tallest statue in the contiguous United States.

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

The smallest island in Manhattan is a manmade landfill dominated by a Buddhist peace arch.

Site of the first pathological and bacteriological research facility in the United States.

One of only two commuter aerial tramways in the United States.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A crumbling hospital from the 1850s on Roosevelt Island.

A museum of Czech puppetry and wine in an allegedly haunted 14th-century stone house.

Walk through Czech history in Prague's largest graveyard.