A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

These artifacts were discovered during the construction of the airport, with some dating back to the Neolithic period.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

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

Savor sheep milk yogurt at the last of Athens' dairy bars.

This monument to those fallen in the World Wars is accompanied by a U-boat that Germany bought for a Deutsche Mark.

This chimerical bridge/tunnel appears to dead end right into the sea.

A spherical "micro-nation" in the heart of Vienna.

A giant interactive periodic table with real samples of the elements.

Ruins of a German castle on top of a towering stone pillar.

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

A series of playful yellow penguins share a serious message about the environment.

Dedicated to the man who saved hundreds of children from Nazi-occupied Czechoslovakia.

A rebuilt Roman city that was once the largest Roman settlement in the region.

Austria's very first and only nuclear power station was completed but never used.

The tallest city hall in the world offers an excellent bento box.

One of the best-preserved remains of "Tokyo's lost rivers."

Tokyo’s only Ainu restaurant serves Indigenous food from northern Japan.

This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

This little replica of Lady Liberty provides a bit of NYC in a Japanese city.

Not quite the menace it once was, this monster still has some chops.

Over 12,000 hygiene oriented objects and exhibits.

Dine amidst exotic plants at this former royal greenhouse.

These relics of the city's past now exist as a prominent modern feature.