This city square dates back to the Scottish Enlightenment and was home to some of Scotland's brightest minds.

This enormous, elaborate tomb looks oddly out of place next to a suburban Edinburgh bowling club.

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

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

A shiny sculpture celebrating the mighty mollusk.

Poetic, metallic giraffes adorn a square off an Edinburgh thoroughfare.

Brass bricks outline the locations of Edinburgh's lost, lively market stalls.

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

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.

The last remaining bottle-shaped kilns in Scotland stand alone in an Edinburgh suburb.

Ship-sized kinetic sculptural fantasy.

Charles Babbage's proto-computer, painstakingly brought to life.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

Overlooking the burial ground is a tower designed to prevent thieves from snatching the recently deceased.

Once home to a Scottish baronet, this 18th-century historic house doubles as a legendary art space.

One of Edinburgh's oldest pubs hides a 19th-century skittles alley in the back.

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

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

Giant, friendly pelicans in Central London, the most unlikely of places.

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

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

A beautiful Greco-Roman structure houses a well once believed to have healing powers.