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

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

This ruined travelers shelter sits abandoned in a desolate bog of Flow Country.

A missing Roman legion was recreated in sculpture along a Scottish cycling route.

Recreations of a Norse longhouse and boat on Shetland's northernmost inhabited island.

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

Legends surrounding this megalithic tomb range from giants to a dwarf named Trollid.

A red-brick beacon stands against the tempestuous Atlantic, on the windiest site in the United Kingdom.

A 16th-century castle unexpectedly nestled within a post-war housing development.

Believed to be the smallest castle in Europe.

An 18th-century viewpoint across the surrounding highlands.

A mysterious, weather-beaten bus lies on the coast of Harris, enticing the curious to investigate.

Cascading waterfalls mark the gateway to the ancient burial place of Clan Macnab.

The ruins of the second of three churches dedicated to the saint in a touristic Scottish town.

Despite what a Thai tourism board might want you to think, this white-sand beach is in fact located on a Scottish island.

The ruins of a 15th-century church once home to priests who prayed for a single family's salvation.

The former seat of power for the Balliol dynasty.

Looking strangely like Rome's Colosseum, this unfinished tower has dominated the skyline for over 100 years.

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

The half-finished remains of what would have been Scotland’s biggest piece of landscape art.

These rusting, skeletal structures are monolithic monuments to Glasgow's industrial past

Unusually, this ancient Iron Age broch has never been excavated.

This uniquely shaped rock formation is one of Scotland's most iconic mountains and gives spectacular views in all directions.

One of the most spectacular 18th-century bridges in Scotland.