The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

These fantastically named natural pools look like something out of a Scottish myth.

Rare collection of medieval books under lock and key.

The largest known medieval map of the world.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

An impromptu shrine appeared shortly after beloved "Torchwood" character Ianto Jones was killed off the show.

The castle still holds traces of the abandoned Roman fort it was built atop.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

A sculpture of a famous ape who was once a beloved household name in London.

The pockmarks across the building's facade are remnants of the Blitz.

Where's a guy to go after a long, hard day at work?

This ancient Egyptian obelisk still bears the wounds of World War I.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

The gigantic skull of a long-extinct species that once roamed the forests of England and Ireland.

The commemorative stone column conceals a secret laboratory.

The ritual has been performed uninterrupted for nearly 700 years.

An architectural oddity hides in plain sight on this iconic London bridge.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.

A measuring mishap led to these artificial stone ladies losing their stomachs.

This intricately carved and hilariously huge bed was such a famous symbol both Shakespeare and Byron used it in their writing.