The bronze uniforms commemorate the vital role of women during World War II.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

360° views of the city plus five floors of optical illusions and hands-on science.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

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

Protecting the dead from opportunistic body snatchers.

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

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

The final resting place of soldiers' loyal canine companions.

Sprawled across the Great Hall ceiling are various constellations and images relating to the zodiac.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The U.K.'s first underground railway line is now a lively thoroughfare for runners and cyclists.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

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

A sweet symbol marks the place where torturous executions were once carried out.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

The 16th-century church has the only stained glass windows that survived the Scottish Reformation intact.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

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

The miraculous hydrant that saved the Mission District in 1906.

A promotional sun clock on the site of San Francisco's great raceway.

Sitting atop San Francisco's tallest hill, a cross honors the victims of the Armenian genocide.