A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

San Francisco's newly reopened hands-on science museum.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

Five candy-colored villages on the Italian Riviera.

2300-year-old Roman road connecting the empire.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

A restaurant and observation deck built in a unique broadcasting antenna.

A fascinating insight into daily life in the Eastern Bloc.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

The most visited, and possibly most controversial, museum in Germany.

A flooded Mexican cave that hides a river beneath the water.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

Kenyan restaurant is a carnivore's paradise, serving exotic meats at its ultimate 'Beast of a Feast.'

Life and death are on parade at the most reliably perilous site of “the Great Migration.”

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.