The floor of this spectacular Baroque sanctuary is covered in memento mori.

A miraculous three-handed portrait of a saint can be found inside this church.

A 15-foot-tall statue of the head of the Sopranos family greets passengers at a train station in southeastern Lithuania.

A 300-kilogram egg sculpture that embodied a neighborhood revival.

This former KGB building is now a museum memorializing the people who suffered during the Soviet regime.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

This micro-nation may be some sort of prank, but its constitution sure seems official.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

This subterranean necropolis holds three floors of antler-dug grave caves.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

Pop culture has helped to keep this iconic British building from being destroyed.

Collection dedicated to brands, packaging and advertising.

The celebrated eyesore created by starry-eyed sweethearts.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

A museum dedicated to linguistics, from how babies learn to talk to endangered and extinct languages.

A simple plaque on the facade is the only reminder that the treaty ending the American Revolution was signed inside.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

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

Slovenia's first mosque is a striking mix of Islamic and modernist architecture.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

There are thousands of tributes and memorials to the King, but none quite like this one in a Kraków city park.