This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Rome's semi-secret peephole vista is also a former Crusader stronghold.

Breathtaking and huge 430 year old maps of Italy.

A vast Communist-era exhibition space in the Bulgarian capital.

"Holy Wisdom" overlooks the city that became its namesake.

Sofia's legislative center is continuously reinventing itself.

A striking symbol of the Bulgarian capital.

An homage to the medieval rulers of Bulgaria.

An ancient church on a tiny island covered in stone bible stories has controversially been turned into a museum.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

Cozy basement bar sports an inventory of over 2,000 beers.

The youngest volcano in Central America.

Paris' linguistic guide to the international language of, yes, love.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

France's most famous cemetery, with some of its most curious tombs.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Venice's island of the dead.

Go inside to really appreciate this 500-year-old technological masterpiece.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

The most confusing clock in New York.

An inspired museum dedicated to the patron saint of enslaved people, inside the cloisters where he lived and died.

This Costa Rican topiary park is a surreal garden of unearthly delights.

This Costa Rican chapel is the most metal church in the world, literally.