A magnificent, iconic stone tower in the Scottish Highlands.

This giant wooden treehouse within a sprawling garden has its own eatery.

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

The oldest residential street in Europe also features an optical illusion.

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

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

Every birth, death, and marriage is recorded in these color-coded leather-bound books.

With lush plants and flowers, huge trees, ponds, and hidden monuments, this place feels a bit like discovering Narnia.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

A gorge full of caverns where early humans lived alongside cave hyenas, giant mammoths and wooly rhinoceroses.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

The quiet field that inspired one of the most famous songs of all time.

The oldest candy store in the world has been selling traditional sweets since 1827.

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

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

These ancient sea caves hold Britain's highest concentration of Pictish rock carvings.

Even after the church tried to wipe the practice out, this pagan festival lives on each year in a small Scottish village.

This Roman amphitheater is said to be King Arthur's legendary Round Table.

This logic-defying 16th-century Tudor manor still stands to the delight and astonishment of onlookers.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

There's a labyrinth of medieval chambers hidden deep below a 15th-century pub.

An 18th century monument regularly tagged with unsettling graffiti referencing a 1940s unsolved murder.