Two rocks in a perpetual kiss and one of "the most romantic spot in America."

More than 700 species live within this murky marvel of a swamp on California's coast.

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The best place in the park to test out your throwing arm.

The grand, column-fronted, sculpture-adorned home of the ambitious digital library.

Its buzzing collection honors vibrator history.

A winding path built in secret on the edge of the continent.

Concrete strongholds stand guard over the Golden Gate.

A living time capsule of the 1960s Richardson Bay water-front.

Neoclassical Revival mansion and set of horror cult classic Phantasm.

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

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

The world's most famous donkey lives in this pen.

This small monument to the great inventor contains a time capsule and a Wi-Fi hotspot.

A life-sized mammoth sculpture marks the spot where the remains of a Columbian mammoth were discovered in 2005.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Three plaques mark the spot where the "forgotten father of broadcasting" worked.

It is locally loved and ridiculed for literally looking like poop.

The largest permanent Monopoly board makes one of the longest games even bigger.

An extensive collection of ancient Egyptian artifacts and mummies.

The headquarters of a secretive order is also a beautifully-designed park.

With its peeling paint and faded sign, this theater-turned-recycling plant is a nostalgic relic of 1950s Americana.

Nancy Thompson's Home from "A Nightmare on Elm Street."