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

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

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

A solemn memorial in a majestic setting that honors a 1692 tragedy.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

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

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

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

This submersible road connecting a French island to the mainland is lined with safety towers for when the tide strands travelers.

This small island, a byproduct of 19th-century canal construction, is now home to a charming Japanese garden.

Home to the "Rat King" of Nantes and other wonders of the natural world.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

A massively oversized measuring tape sculpture sits inside a hidden yard.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

The best place in the world to buy tinned fish.

One man's remarkable private collection of art from around the world.

The world's oldest bookshop still in operation.

This charming candle shop has been in business since 1789.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.