A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

One of only two commuter aerial tramways in the United States.

An archive of nearly every day of Buckminster Fuller's life.

The memorial to the victims of the Jonestown Massacre carries the names of 918 lost, including one name people wish wasn't there.

Olfactory delights in San Francisco's Botanical Gardens.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

A museum befitting the city responsible for supplying the majority of the world's LSD.

The only theatre in the world constructed specifically for sound movement.

A walk down memory lane in the heart of one of San Francisco's most notorious neighborhoods.

Visible below the waves are memorials to the city's Gold Rush dead.

Tiki luxury on Nob Hill.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

Early prototype for Frank Lloyd Wright's Guggenheim.

Gold Rush ship-turned-hotel buried underneath San Francisco's financial district.

A Barbary Coast watering hole built into a Gold Rush shipwreck.

9,000 square feet of vintage and modern mechanical toys, dioramas & sideshow curiosities.

The "original web site," this farm in Northern Vermont encourages orb-weaver spiders to build their daily webs, and then sells the preserved masterpieces.

This expansive bridge in the Canadian wilderness was originally just built for friends.

At just six feet two inches deep, it is said by Guiness and Ripley to be the world’s narrowest freestanding office building.

A Texas-sized particle collider that was abandoned due to its Texas-sized budget.

Over 2,000 ancient temples dot the Myanmar landscape at the site of this famed archaeological site.

A museum in a law office, filled with authentic and counterfeit goods.

The original "capsule building" is a masterpiece of Metabolist architecture.