If you visit the burial place of King Frederick the Great, you'll likely find a couple of potatoes sitting on his tombstone.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

The former headquarters of history's oldest megacorporation.

This 1920s Amsterdam neighborhood was built as a giant experiment in concrete construction.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

The attic of a four-century-old canal house hides a clandestine church.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

The site of the climactic scene from the classic horror film is now a historic landmark.

Neoclassical Revival mansion and set of horror cult classic Phantasm.

Puzzling...this tree looks like an assemblage of dismembered monkey limbs.

At this 1940s-era neighborhood favorite, you can still drink a cherry phosphate.

A young botanist's horticultural vision realized through a lifetime of planting, tending, and collecting seeds.

A giant Troll lurks under one of Seattle's oldest bridges.

Dubbed the "Blade Runner dragon," this buzzing neon sign is a beloved local icon.

A spiritual vortex among the red rocks in Sedona.

Museum preserving torture methods from the past.

This former luxury resort in Kaua'i is now an abandoned relic.

An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

The Suurhusen church tower in Germany leans over farther than the famous Leaning Tower of Pisa.

A monument marks the location of the first successful steamboat demonstration.

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.