Copenhagen's celebrated theme park and gardens.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

The only surviving piece of Copenhagen's 16th-century defensive wall.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

A mocking tribute to the past and modern leadership of Prague.

Harlequin costumes, signed scripts, and armor-wearing puppets.

A series of playful yellow penguins share a serious message about the environment.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

The world's first experimental nutritionist is memorialized as the "Hippocrates of naval medicine."

A series of three shiny letters mark the boundary of an old refuge for those being pursued by debt collectors.

This volcanic plug boasts the longest recorded history of any Scottish stronghold.