A famous alternative culture epicenter and where Joplin serenaded young hippies.

A library and museum dedicated to typography.

The stones that traveled from Spain to eventually become a holy place for San Francisco's nature worshippers.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

Olfactory delights in San Francisco's Botanical Gardens.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Its buzzing collection honors vibrator history.

This shop specializes in oddities and Victorian-inspired wonders.

A 140-year-old castle with underground caves hidden in San Francisco.

A psychedelic labyrinth on the San Francisco bay.

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

A huge musical instrument played by the ocean.

On the eve of a condemned prisoner's death, this bell rang 12 times outside their cell.

One of the figures in this Celtic sculpture continues to puzzle archaeologists.

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

Where Aleister Crowley attempted to seize the Hermetic Order of the Golden Dawn in a mask and a kilt.

The last four extravagant street signs of London's historic banking street.

A little slice of Japan and its aesthetics in London's Holland Park.

A musical composition 1000 years in length plays at the Trinity Buoy Wharf in London.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.