A museum dedicated to the history and exploration of both popular music and science fiction.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

A wall of chewing gum moonlights as collective art.

The four tall pillars once marked the entrance of the historic Seattle church that fought for women's suffrage and civil rights.

This painted blacktop brings the classic arcade game to life.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Where beautiful signs live on forever.

An abandoned munitions factory with a shot tower continues to wage war on the surrounding environment.

A castle built by an eccentric medieval enthusiast in rural Ohio.

Dramatic river bend surrounds a natural red-rocked pedestal.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Tiki luxury on Nob Hill.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A psychedelic labyrinth on the San Francisco bay.

The most confusing clock in New York.

There must be a pun in this haystack somewhere...

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

A bit of retro transportation flair preserved in the world's largest department store.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

Mysterious 500-year-old tapestries depict a unicorn hunt.