It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

Eighty million natural history specimens call this gargantuan museum home.

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

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

Northern Ireland's Brobdingnagian stepping stones.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

This South London cemetery holds the remains of more than 15,000 people.

The atmospheric road was never meant to be so creepy.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

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

This is what trains will look like after the zombie apocalypse.

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

It's hard to believe the dizzying patterns covering this abandoned mine are completely natural.

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

This ethereal, rainforest-like gorge is home to waterfalls, quaint bridges, and fairy folk.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

Built to hold the worst of the worst of the Nazi war prisoners.

Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

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

One of two Irish-style round towers in Scotland, this structure has mysterious origins.

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

Summer in Scotland begins with a spectacularly wild and colorful event rooted in ancient pagan traditions.

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