A scattered trail of street art adds a pop of color to the city's stark structures.

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

An 18th-century religious argument etched into stone.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

This ancient holy well is older than much of the city that surrounds it.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

A close look reveals that the Scottish monument is just slightly off-kilter.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

A double cantilever system bridge that was designed to prevent flood damage.

The longest staircase lock in Britain.

This macabre monument atop an ancient well gives a nod to a brutal episode in Scottish clan history.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

A magnificent, iconic stone tower in the Scottish Highlands.

The 5,000-year-old megalith is believed to be Scotland's tallest standing stone.

A whale's jawbone and a malfunctioning harpoon welcome you to the village of Bragar and its lore.

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

A failed infrastructure project now owns this unique moniker.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

The Tudor-style cottage in the middle of the square is not quite what it seems.

The last Victorian market in Belfast.