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

Hamburgers are intensely proud of their tunnel beneath the river.

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

A favorite with sightseers and locals alike, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

Once a dumping spot, now a park with a kayak launch.

Oldest surviving example of a Dutch saltbox frame house in America.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

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

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

Sniff the Titan Arum's rotting flesh.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Eighty million natural history specimens call this gargantuan museum home.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

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

A beautiful mountaintop mausoleum devoted to a Montenegrin icon can't seem to make everyone happy.

A tiny church on a man-made island in the Adriatic.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

Op-art architecture designed for happiness.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

The Frank Zappa fan club erected this monument to their prog-rock hero to mark a new era of post-Soviet Lithuania.

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

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