The restored and active Victorian-era final resting place of San Francisco.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

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

San Francisco's newly reopened hands-on science museum.

Faceless white figures loom over the city from the rooftop.

These WWII-era murals were initially booed as a libelous portrayal of the American dream but have survived multiple attempts to have them destroyed.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

Only hotel where you can legally launder money.

Furniture tries to escape an abandoned building in San Francisco.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

One man's quest to save his town with a trail of record-breaking sculptures.

A monument to the center of the North American continent may be off by a few miles.

When ecosystems collide in the arid Southwest.

Even in death, he's still your huckleberry.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

The largest self-built castle in the U.S., six decades in the making.

The highest bridge in America was built for an almost unnervingly small amount of money.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

Victorian "Fancy Craft" Hair Wreaths and Relics.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.