Huge stone depressions which may have acted as an Incan agricultural experiment.

This hunter-gatherer architecture is believed to be the oldest religious complex known.

This popular cave pool is truly magical, despite the crowds.

Flames have been burning within this mountain for more than 2,500 years.

Neal Cassady may still have an open tab at one of Denver's oldest watering holes.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

A retired subway car stands alone in a field in the middle of Queens.

Featuring a meatless buffet fit for kings, this family-owned Zurich eatery is considered the oldest vegetarian restaurant in the West.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

A small but hugely whimsical theater where marionettes play out the "The Battle of Stalingrad."

Go inside to really appreciate this 500-year-old technological masterpiece.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

Tokyo’s only Vaudeville-cuckoo clock–steampunk-Victorian curio cabinet time piece.

Every Sunday, this Thai temple in Berkeley serves a backyard brunch.

A cheese discovery made by shepherds became the pride of a region.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

The location of Puerto Rico's first water bottling plant, thanks to a collaboration between Mother Nature and technology.

The world's spiciest ice cream comes from Glasgow.

The largest and best-preserved Roman amphitheater in Africa was designed to seat 35,000 people.

Perhaps the oldest vine in North America, this sprawling plant helps make a sweet wine.

Little India's hidden gem of kindness and good food.

This riverside restaurant has been serving customers since 1146.