This sculpture forces visitors to confront their relationship with space.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

The "3rd largest" city in California is an empty mirage of suburbia in the middle of nowhere.

This strategically-placed fountain creates the magnificent illusion of mustangs galloping across a river.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

The oldest residential street in Europe also features an optical illusion.

Fourteen curious and controversial white bunnies sit in a circle near Newport Beach City Hall.

The only thing sweeter than the potatoes is the canine proprietor of this roadside stall.

This large, circular tomb is the final resting place of the first emperor of Rome.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

An architectural gem nestled into a promontory overlooking a prehistoric landscape.

Sporting Brutalist architecture, this school is hidden amid a quiet suburban neighborhood.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

One of the only places where Earth’s mantle lies above water.

A cuddly version of a dark mythological creature now acts as the mascot of a town.

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.

The world-record holder for the longest bridge stretching continuously over water.

A cheeky reminder about the value of art dangles above one of Olomouc's busiest streets.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A lake with hundreds of ancient skeletons surrounding it. The surprise is what killed them.

Far from the shore, this sandy victim of the Skeleton Coast looks like it was plopped in the middle of the desert.

One of the famous Czech artist's lesser-known Prague installations appears to be a glowing fetus affixed to a drainpipe.