A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

Visit the monolithic tomb of America's most famous general.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Unique antiquarian shop specializing in globes, maps, and prints.

The "Seinfeld" diner.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

In 1830, cemetery workers in Cham unearthed a chamber housing thousands of skeletal remains from the 13th century, which can still be viewed today.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

Remnants of an exploded schooner and wrecked submarines form a breakwater.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

The great Danube river starts here.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

When German-Iraqi relations broke down, this embassy was vacated post haste.

This German bone house contains the remains of some 20,000 souls.

What was once thought to be a wellspring of unicorn bones is actually just a prehistoric burial site.

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.