This residential door allows San Francisco muggles a glimpse at the wizarding world.

A meditative space out of a fantasy story.

Canyon walls shrouded in ferns.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

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

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

A huge musical instrument played by the ocean.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

There's something big lurking beneath the surface of this tiny Oregon park.

100-year-old shipwreck you can walk up to at low tide.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.