The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

The final resting place of soldiers' loyal canine companions.

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

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

Largest lake in Great Britain measured by surface area.

Fascinating town where normal life interfaces with the occult.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

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.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The heads of two giant mythological water horses honor Scotland's horselord past.

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

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

The largest greenhouse in the world is home to over one million types of plants.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

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

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

The longest hedge maze in the world.

Northern Ireland's Brobdingnagian stepping stones.

The sign at the garden gate reads: "These Plants Can Kill."