Erotic art covers the walls of the largest ancient pleasure palace.

The world's most active stratovolcano is almost always erupting.

Old Danish castle immortalized in Shakespeare's Hamlet.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

Pensacola's UFO home has withstood many hurricanes—just as the experimental 1960s design intended.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Puppet theater and museum holding a collection of more than 300.

The site of the deadly Triangle Shirtwaist Factory Fire.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

An old department store turned Nazi prison turned artist commune.

Looming communist pillar with a Czech twist.

A quaint Russian village in the middle of a German metropolis.

Experience a charming 1930's version of "infotainment."

42nd story Pyramid shaped penthouse tops Seattle's oldest skyscraper.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

A typical "Old South" manor, once owned by author Anne Rice, served as the setting for several of her witchcraft sagas.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

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

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

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.