A galaxy of glowworms—larvae of a gnat—hides deep in the belly of these caves.

Largest Kauri tree in New Zealand.

New Zealand's epic shrine to all things puzzling.

Handcrafted thermal spa washes away each night with the tide.

The once and future home of New Zealand's famed Pink and White Terraces.

The explorer Captain Cook may have named it White Island, but the Maori call it Te Puia o Whakaari – The Dramatic Volcano.

Highly spherical boulders on the shores of New Zealand.

Deadly scalding and one of the largest hot springs in the world.

These phallic stone spires once served as Tolkien's Paths of the Dead.

One of the world's steepest streets seems to have houses sliding down it.

This strange geological landscape erupts with sudden bursts of water.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

The glacier tucked within a New Zealand rainforest.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

Some of the clearest water anywhere in the world.

A perfect turquoise lake colored with glacier dust.

A solitary tree has grown up all alone on Lake Wānaka, backdropped by the beautiful Southern Alps.

The Dalai Lama named this New Zealand landscape the "Spiritual Center of the Universe."

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

Tubing through a cave lit with glowworms is a magical underground experience.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

An eccentric 18th century naval officer built a ship's quarterdeck on his roof, the inspiration for Mary Poppins's "Admiral Boom."

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

This one has sailed five times as far as Sir Francis Drake's famous ship.