This unique Seattle structure was designed to be the greenest commercial building on the planet.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

The first hand-illuminated, hand-written bible since the invention of the printing press.

Summer in the "Turtle Racing Capital of the World" means rousing weekly reptile races.

Explore the quarry where the marble was sourced for Michaelangelo's David.

An old spiral fire escape dangles above a public courtyard in Midtown Oklahoma City.

This small monument marks the divide between the Atlantic and Indian Oceans at the southernmost tip of Africa.

At high tide this strange footbridge appears to have no purpose whatsoever.

The world's first hotel built in an abandoned water-filled quarry.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

This desert oddity hides in plain sight thanks to a cartographic error and a desert explorer with a punny sense of humor.

Dubbed the "Blade Runner dragon," this buzzing neon sign is a beloved local icon.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

One of the foremost Sherlock Holmes collections is hidden away at a Toronto library.

In Hong Kong, a fairytale flower tunnel is hidden within the gardens of a public housing complex.

Norway has built what may be the world's most beautiful public toilet.

Once thought to be the fabled Holy Grail, it is now known to be an oil lamp.

The World Wide Web was created in this nondescript corridor at CERN.

An enclosed rotunda at the Henry Art Gallery in which viewers can look up and see the uninterrupted sky.

A Japanese cat island also populated by the descendants of a band of banished samurai.

The vibrant buildings in the “capital of the comic strip” celebrate the art form that made it famous.

The 400-year-old remains of the samurai invasion of Korea.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.