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

This Scottish bay still reveals evidence of its days as a seaside swimming pool.

This former World War II artillery defense site was built to guard the industrial city of Glasgow.

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

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

The main residence of the Erskine family and the hereditary keeper of the nearby royal Stirling Castle.

The ruins of a 15th-century castle that has seen its fair share of bitter feuds.

It's said this was once the home of King James V's pet lion.

This mural condenses 96 miles of one of Scotland's best-known trails into a unique art display.

Cut into a sheer cliff face, these stairs are the only way to reach a secluded Scottish harbor.

This man-made waterfall was designed to help improve access for spawning salmon.

A tumbling waterfall near a narrow passage that was used to herd cattle for hundreds of years.

Every September, international competitors flock to a tiny Scottish island's flooded quarries.

The oldest natural aquarium in the United Kingdom.

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

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

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

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

A watering hole from the late 1800s in the heart of the Campsie Fells.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

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

This abandoned mausoleum from 1815 sits deep within the forest surrounding Callendar House.

“It has nae lugs!”

The ruins of a defunct limestone quarry still haunt this Scottish promontory.