Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

This colorful mosaic remembers one of Britain's most deadly peacetime fires.

The oldest house in Glasgow is now a museum dedicated to the city's medieval history.

An ancient neolithic tomb that only sees the sun twice a year.

The largest portal tomb in Europe has a capstone weighing around 150 tons.

A mysterious Neolithic tomb is perched along the edge of a modern golf course.

A Neolithic passage tomb said to have sheltered two legendary Irish lovers.

Hidden in Carnfunnock Country Park is a lasting testament to the Normans who once settled in the region.

Wander among the abandoned ruins of this once-powerful medieval town.

The loneliest island in New York.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

The remains of a 13th-century Franciscan friary have survived multiple attempts at destruction, most recently in 1921.

A stunning medieval castle owned and restored by the famed actor Jeremy Irons.

The remains of a majestic house that was once stood in the crosshairs of the Irish Republican Army.

This Neolithic passage tomb forms part of a World Heritage Site.

This Bronze Age tomb is the centerpiece of a clearing within a beautiful Irish forest.

The severed head of a 17th-century Irish martyr lies within an intricate golden shrine.

Behemoth, cannon-like telescope operated by generations of Irish earls.

This 5,300-year-old tomb with mysterious carvings crowns an Irish mountain.

A steam trawler with a whiskey-soaked history driven ashore in 1960 resides rusty but still standing on the shoreline.

These imposing walls and towers look more like the ruins of a fortress than a monastery.

The ruins of a medieval monastery named after a type of tree.

This ancient Irish landscape boasts hundreds of legendary ruins.

This ancient Irish tower could easily have stood in for Rapunzel's prison.