The ruins of a 12th-century seaside castle on the southwest coast of Scotland.

A 13th-century stronghold that has fallen into ruin.

Near this coastal cave stands a small memorial to the hermit who made it his home for three decades.

A monument to a Russian cruiser near its final resting place off the Ayrshire Coast.

Now in ruins, this abbey was the home of Tironensian monks for more than 400 years.

A small stone pillar marks the spot where Mary, Queen of Scots, spent her final hours as a free woman.

Now in ruins, this castle stood for centuries and saw a number of gruesome events.

This painting of a beloved dog will be on display at the Scottish National Gallery at long as the museum exists.

Named after a 6th-century saint, who was also a scholar.

A single oak tree rises out of the waters of Loch Lomond.

The remains of "the Pearl of Scotland" can be found inside this church.

Dating back to the 500s, these stones include some of the oldest Christian memorials in Scotland.

The last water-powered beam pumping engine in Britain.

A stone-filled garden in the heart of Edinburgh commemorates the father of modern geology.

Each section of this public work of art represents one of the city's guilds.

One of Scotland's earliest hydroelectric power stations.

A small, former industrial site overlooking Loch Kinardochy.

This Neolithic stone circle is the most complete of its kind in Scotland.

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

It's said taking a hammer and nail to this stone relieves a toothache.

A reportedly haunted parking structure with alleged links to Jack The Ripper.

This modern work of art was a refreshing addition to one of the oldest theatres in the city.

Dedicated to one of the nation's worst engineering disasters.

Nine hundred years ago, this was the home of a feudal lord. Today all that remains is a steep mound surrounded by a deep moat.