Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

Before Metro, Washington had a robust streetcar network—and you see the remains of this infrastructure if you know where to look.

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

Monument to a suicide protesting the Soviet invasion.

A mocking tribute to the past and modern leadership of Prague.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

A grumpy old water goblin guarding an old mill on the Devil’s Stream in Prague.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Dedicated to the works of the legendary special effects artist.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

This automated sculpture of two men peeing will spell out text messages with their micturition.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

The oldest garden in Prague, once part of an medieval orchard.

Dedicated to the "father of modern education," this museum documents the history of education in Czechia.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

A surreal statue honoring Prague's favorite literary son.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

This spooky statue sits outside a famous Prague theater.

A significant example of Czech cubist architecture—a style you won't find anywhere else in the world.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

The final resting place for the remains of 143 Habsburg royalty.