Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

This historic hotel invented the chocolate brownie.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.

A different kind of swan princess.

A vast array of tropical plants collected by a vacationing couple.

This whimsical outsider art wall holds tiny treasures donated by the local community.

The culprit who accidentally lit this 3,500-year-old tree on fire stated "I can't believe I burned down a tree older than Jesus."

This stretch of highway is said to be haunted by ghosts of settlers whose graves were paved over.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

A Dutch clog company in the town of Zaandam loves the wooden shoes so much it made a museum for them.

The place where Czar Peter I of Russia resided in 1697 during his Grand Embassy.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

This heavily worn bas-relief was once an honored fertility symbol.

Hidden along this old street in Antwerp is a surreal monument of a bronze arm sprouting four hands.

This interactive sculpture allows visitors to leave a message in case a friend passes by.

This legendary giant, born from vegetables, terrorized townspeople and cheated local children in games.