No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

A world-class observatory in the California desert.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

A medieval setting reimagined into a unique art alley.

Atop this electronic store resides a massive fighter jet.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

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

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

One of the oldest continuously-operated gay bars in the United States is allegedly haunted by Truman Capote and Tennessee Williams.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

Made famous by 'Star Wars,' these troglodyte homes face an uncertain future.

This ten-ton fruit sculpture celebrates the Finland homeland.

This 45-story tall abandoned skyscraper is the third tallest building in New Orleans and Lousiana.

The second oldest continuously operating bar in Louisiana.

Tiny historical streetcars wind through a small scale version of Crescent City in this whimsical train garden.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.