This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

Come for the flowers, stay for the bats!

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

World's largest working waterwheel has been around for over 150 years.

These temples are among the oldest free-standing stone buildings in the world.

The eclectic seaside sanctuary caters to a rather fowl crowd.

Along the side of the road on a small Japanese island is an extensive garden of uniquely designed Shisa statues.

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

What was once England's second-richest abbey is now a haunting ruin.

The celebrated eyesore created by starry-eyed sweethearts.

Macabre astrological automaton clock dating to the late 1400s.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

The world’s largest LED display, built over an F1 race circuit.

Whitewashed mosque contains the world's largest carpet.

Skyscraper powered by wind turbines attached between its towers.

A small island hides in plain sight on Austin's Lady Bird Lake.

The once highest point in China blends symbolic design with a kick of adrenaline.

Not the result of an accident, hurricane, or aliens, this is an eye-popping tribute to the Melbourne tram.

A colorful street named for the legendary Australian rock band.

You'll find the little birds tucked within the rocks of this Australian beach.