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

An essential stop before plundering, BYO Cutlass.

Tiki luxury on Nob Hill.

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

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

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

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

Its buzzing collection honors vibrator history.

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

This shop specializes in oddities and Victorian-inspired wonders.

A psychedelic labyrinth on the San Francisco bay.

The first archaeological site discovered by aerial photography.

Ancient human remains unearthed around the iconic monument.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

The longest hedge maze in the world.

Famously misunderstood wonder of the ancient world

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

The sign at the garden gate reads: "These Plants Can Kill."

This knockout museum lies in a sleepy corner of London.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

Black cat statues guard this temple-like Egyptian revival factory.

A Victorian school for poverty stricken waifs has been preserved as a museum to their donated education.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.