A gap marks the spot where a now-missing stone once completed the circular arrangement at this Neolithic site.

These sculptures common among indigenous populations in North America, celebrate Shetland's unique geology.

The main feature of these gardens is a rarity in the northernmost part of Scotland: trees.

This 16th-century tower house has a little hidden secret and a connection to an Apollo astronaut.

Atop this arch, during the 16th-century, a sermon was given to those suffering from plague.

A 2,000-year-old Iron Age fort offers stunning ocean views.

This former chapel resides on an island connected to the mainland by one of Shetland's iconic beachy tombolos.

The ruins of a world-renowned medieval hospital.

A circle made up of 19 boulders has stood in Scotland's Bladnoch Valley for some 4,000 years.

An urban megalith steeped in local lore.

The recurring nature of this geographic feature might make it unique in the world.

Inside a Scottish castle hangs the tattered remains of a flag with murky origins and supposed magic powers.

A private home envelops the ruins of this 13th-century priory.

This 900-foot structure with 20 arches crossing a Scottish river was built in the late 19th century.

A square stone tomb marks the spot where six men were killed while holding a service in Caldoris Wood.

Considered "the most original, complete, and unimproved" circles in Aberdeenshire.

It's believed a castle existed at this site since the 12th century.

It's said that at this location, a Scottish poet met the Queen of the Fairies.

The oldest church in Inverness witnessed the brutal executions of many Scottish soldiers.

On a hill overlooking Loch Trool, a granite boulder marks the site where Robert the Bruce, King of Scotland, defeated an English army.

Built in the 16th century, the tower is now in ruins.

This fortified L-shaped tower is the ancient seat of clan Hannay.

One of the city's oldest pubs displays a skull said to belong to the country's last witch burned at the stake.

On a corner of the Ardmeanach peninsula on the Isle of Mull, a 50 million-year-old fossil tree hides in the coastal cliffs.