The remnants of a facade from a 19th-century market stall emporium.

This enchanting Victorian estate was home to the world's first hydroelectric power generator.

One of the few surviving examples of Victorian-era public toilets now houses a small homestay.

This 13th century castle is chock full of ghosts and impossibly rare cows.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

Now home to a drinking establishment, this building has a macabre history.

This enormous secondhand bookstore inside a Victorian train station sparked the "Keep Calm and Carry On" craze.

This tiny island is home to the world's largest colony of Northern gannets.

This giant steel bear is a tribute to naturalist John Muir.

This Scottish tollhouse was a destination for clandestine marriages in the 18th and 19th centuries.

One of four sister bronze sculptures dedicated to the widows and orphans of an 1881 tragedy.

A poignant memorial shows the widows and children left heartbroken by the worst fishing disaster in Scottish history.

This tidal island, a sacred site in early English Christianity, was the target of a notable Viking invasion.

A watchhouse constructed from tombstones, to make way for a burial pit, for the victims succumbing to a deadly disease.

A rocky outcrop where monks hid their most holy relic while escaping Danish invaders.

A giant piece of cutlery designed to remind us about the origins of our food.

London’s first road overpass is so old that it was originally built for horse-drawn carriages.

One of London's lost rivers runs through a pipe over the tracks of this subway station.

A storied London perfume shop that supplies scents for royalty has been operating out of this storefront for nearly 300 years.

One of London’s rare Tudor-era buildings is a fate-defying gatehouse for a church.

Visit the grave of a famous feminist author and the mother of Mary Shelley.

Look up from the busy streets to discover how time is kept!