According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

This beautifully verdant lagoon is tucked below a massive volcano in a crater atop a black pebble beach.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

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

A beautiful Kentish country intersection hosts a tasty little photo spot.

A six-ton wedding present for the King of the Scots.

The most loyal of little dogs, or a Victorian era publicity stunt?

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

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

Gargoyle head that brings good luck.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The star-studded street honors the city's most notable Brummies.

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

The celebrated eyesore created by starry-eyed sweethearts.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

A little sculpture with a large wardrobe.

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

Highly spherical boulders on the shores of New Zealand.

The glacier tucked within a New Zealand rainforest.

Watch the seas clash at the place where according to Maori tradition, the spirits depart for their journey to the afterlife.

The "punniest place on Earth” has nearly as many bull-themed puns as it does people.