17th century streets hidden under Edinburgh were once a breeding ground for the black death.

The most loyal of little dogs, or a Victorian era publicity stunt?

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

The final resting place of soldiers' loyal canine companions.

A six-ton wedding present for the King of the Scots.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

The colorful stairs are made with marble from the world's major quarries.

An eccentric millionaire's personal curio collection includes at least one shrunken head.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

A man-made island in scenic San Francisco Bay.

The restored and active Victorian-era final resting place of San Francisco.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

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

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

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

San Francisco's newly reopened hands-on science museum.

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

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

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

A psychedelic labyrinth on the San Francisco bay.

A huge musical instrument played by the ocean.

One of the largest Marian shrines on the West Coast stands rather unexpectedly in Silicon Valley.