Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

Spain's largest bullring offers a unique glimpse at architecture and history.

This building features dozens of faces along its facade, although one is a bit chilling.

A fake Transylvanian castle houses a cathedral of antlers.

A Romanesque sanctuary of calm amid the bustle of downtown Los Angeles.

A lonely Gondola stuck on a traffic circle sits in a spot where it once would have floated down the Grand Canal.

One of Los Angeles's first murals once vibrantly depicted the dangers of United States imperialism.

A 50-foot tile mural mosaic for the 100-year anniversary of the Statue of Liberty.

Formerly Fire Station No. 27, the museum is a hidden gem in the heart of Hollywood.

A few iconic structures are all that remain of America’s first outdoor shopping mall.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

An industrial relic is now one of Europe's most staggering art spaces.

You haven’t properly toured a winery until you’ve slept in an actual wine barrel.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

When the rain falls, this drain system turns into a musical instrument.

This "floating railway" is one of the world's oldest monorail systems.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

Part of a highway network meant to connect Miami to Montreal, this 10-mile stretch of road made from red bricks is still around 100 years later.

Near the ruins of a Civil War coastal fortress lies the only known African refugee cemetery in the United States.

Owned by no one but beloved by all, Brownie was a good dog.

A tribute to a future time when gravity is conquered.