A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

A familiar otherworldly creature guards this 12th-century Scottish abbey.

An eccentric aristocrat brought these Australian natives to their current Scottish home.

A local tree surgeon has created a whimsical walk full of carved tree stumps near Scotland's Loch Lomond.

This eclectic sanctuary is a hodgepodge of various architectural styles, all crammed into one building.

England's largest white horse isn't even white.

This picturesque view of the Scottish Borders was beloved by Sir Walter Scott.

The heart of a Scottish legend had a centuries-long journey before reaching its final resting place.

This one has sailed five times as far as Sir Francis Drake's famous ship.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

This 1920s Dutch barge is now a floating bookstore.

The cedar tree in Highgate Cemetery earned its title by accident.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

The Columbia Road Flower Market is now open every Sunday, rain or shine.

A collection dedicated to the treatment of disease, held in London's oldest hospital.

400-year-old garden, restored to beauty.

Catacombs turned marketplace.

This tangled English forest looks like something right out of a fairytale.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

A fantastic castle rumored to be the birthplace of King Arthur.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

The longest hedge maze in the world.

A 30-acre garden inspired by the principles of modern physics.