Naturally formed rock city in Poland.

Communism's topsy-turvy effect on Poland has been brought to life in this wacky tourist trap.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

A surreal botanical garden with an even more surreal tour guide.

This monumental fountain has moved around the city multiple times.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

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

One of the most accessible undersea plane wrecks in the world.

This isthmus in the Bahamas narrowly separates the roiling Atlantic from the cool Bight of Eleuthera.

One of the deepest blue holes in the world.

They squeal, they nosh, they look like predators.

This arid landscape was once a lush wetland. Today, it's a paleontological site filled with fossilized mammoths, sabertooth cats, and more.

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

A new kind of theme park for adults off the Las Vegas Strip.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.