The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

San Diego's most historic and haunted home.

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

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

Largest lake in Great Britain measured by surface area.

Climb this overlooked gem's spiral staircase and you'll be rewarded with spectacular views of Glasgow.

Memorial to the Titanic engineers that died working to hold back the sea.

Protecting the dead from opportunistic body snatchers.

A giant pineapple, a symbol of hospitality, and an amazing vacation rental option.

Possibly the oldest living thing in Europe, more likely a pagan survivor.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

The fountain marks the area where hundreds of accused witches were burned at the stake.

A 30-acre garden inspired by the principles of modern physics.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

Spend the night in this formerly abandoned traditional Scottish village.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

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

A hidden tunnel leads to a medieval queen's shrine buried beneath a parking lot.

This charming old building's loose connection with the Scottish Reformer is what saved it from demolition after it split apart.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

This short white tower is all that's left of Scotland's first permanently manned lighthouse.

A plaque installed underwater marks the fall of a royal family from an imagined parallel universe—part of a globe-spanning art project.