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

Largest lake in Great Britain measured by surface area.

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

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

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

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

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

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

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The longest hedge maze in the world.

360° views of the city plus five floors of optical illusions and hands-on science.

A kaleidoscopic warehouse-maze of handmade neon signs.

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

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

The atmospheric road was never meant to be so creepy.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

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

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The Australian lorikeets that like to tie one on in an annual drinking binge.

This pair of Australian "waterfalls" appear to be falling straight across the land.