For a couple of months each year this Swedish city turns into a festive neon phantasmagoria.

This massive blockhead sculpture hides an entire library.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

The world's longest outdoor escalator takes visitors to the top of China's largest dam and is also shaped like a dragon.

Despite being considered a thoroughly American sport, basketball's oldest surviving playing field is found in the basement of a Paris YMCA.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

A 16th-century horror show built in a lovely Italian garden.

A massive underwater sinkhole made famous by Jacques Cousteau.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

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

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Isolated atop this Balinese sea crag is a lovely Hindu temple that is said to be guarded by sea snakes.

This quaint Hungarian railway system is operated exclusively by children between the ages of 10 and 14.

Once the most densely populated place in the world, this island is now a ghost town.

A small Japanese village claims to be the final resting place of the son of God (and God's other son's ear).

The highest bridge in America was built for an almost unnervingly small amount of money.

This modern monument to pagan belief looks like it was transported straight from ancient times.

Thirteen sculptures in central Moscow graphically depicting vices of the modern world.