Museum dedicated to the terror regimes of Hungary.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

A fake Transylvanian castle houses a cathedral of antlers.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

A misnamed well, with a deep dark past.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

A Serbian church lit by chandeliers made of weapons.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

Where the lovelorn find a home for their sentimental keepsakes.

An ancient knight and a symbol of the city's freedom.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

A portal into the bricked up canal that runs through the heart of Washington D.C.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

Decades before the scandal, this staircase on the river was a literal "water gate."

The most accurate timepiece in the world.

A nostalgic bibliographic gem.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.