This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

This private residence was the template for one of the most beloved television homes of all time.

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

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

Its buzzing collection honors vibrator history.

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

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

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

An artsy hidden staircase leads to breathtaking views of San Francisco.

Life in this isolated, hilltop lighthouse was lonely, but it sure was lovely.

Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

A white oak with property rights.

A Los Angeles cemetery that was once at the center of a Supreme Court dispute.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

One of the largest, oldest, darkest, quietest motel rooms in the world.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

This institution collects the history of burlesque dancing with a titillating collection of ephemera and pasties.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

This historic graveyard was partially paved over to create a streetcar line.