This century-old, family-run bakery specializes in loukoumades, a Greek doughnut once served to ancient Olympians.

These ancient ruins hide in plain sight next to a dessert shop.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

An ancient octagonal weather station named for the eight Greek gods of wind.

Legend says it was constructed with the destroyed pillar of an ancient Greek Temple.

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

Gladiators once walked this ancient, subterranean passage.

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

An ancient Phoenician citadel once stood at the site where Queen Dido first landed, according to legend.

This museum in the famously blue neighborhood of Sidi Bou Saïd showcases a traditional Tunisian lifestyle.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

A group of artists transformed this desolate city alleyway into an outdoor gallery of street art.

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.

A place to eat for on-the-run agents and espionage enthusiasts.

Statue dedicated to the star of an old television show.

This striking art museum holds an amazing series of curiosity cabinets.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

Once a speakeasy operated by Al Capone, this Milwaukee cigar bar is now a haven for ghost hunters.

A factory in Milwaukee where poop is reclaimed… and recycled.

This was once the largest four-sided clock in the world (yes, even bigger than Big Ben).

A unique botanical garden housed in three giant geodesic domes.

Robots, lasers, and whoopee cushions, oh my!