One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

A defensive structure built during the Hundred Years War has remained useful in one way or another for nearly 700 years.

Today, Kent's medieval monarchs hold court on a busy pedestrian thoroughfare—or at least their statues do.

Now a memorial to merchant sailors and Titanic victims, this medieval church was destroyed by bombing raids in 1940.

A half-mile-long stretch of medieval forts built after a devastating pirate attack persists amid the modern port city.

This hill and tower are steeped in legend, from King Arthur to the Holy Grail.

A dark Victorian well house now plays host to mystical waters and pagan shrines.

Fascinating town where normal life interfaces with the occult.

In the ruins of Glastonbury Abbey lies the alleged resting place of the legendary king.

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

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

A whimsical cottage from the 1300s with a preserved Victorian-era post office inside.

Part museum, part piece of Arthurian-inspired history, this stately hall attracts King Arthur fans from miles away.

This Art Deco landmark claims to be the longest bridge over the shortest span of water in the world.

The world's largest moose statue is located (where else?) in Canada.

Underground tunnels once home to crime are now back open to the public.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

Watch the newest land on the planet form before your eyes.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This Hawaiian cattle ranch acts as a museum devoted to the island cowboys that predate the wild west.

Try your hand at old-fashioned coffee growing at this museum devoted to one of the world's most coveted beans.

This unusual lava tube spouts seawater during high surf.

Once a black market electronics marketplace, now an otaku shopper's paradise.