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

This magical space partly designed by Antoni Gaudi is one of the best examples of romantic gardening in the Mediterranean.

This awesome Spanish castle is so fantastical it was actually used on Game of Thrones.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

This house's itty bitty size means no humans allowed.

At the foot of a waterfall lies a peaceful swimming lagoon and evidence of over 60,000 years of human habitation.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

Wonderland replication in progress by one persistent man.

Bacteria and algae give the salty water its bubblegum hue.

Week-long block party becomes a competition for the best decorated street.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of the world’s longest pedestrian suspension bridges.

You can cross from one country to another in a single hop on this little bridge.

When Azorean green tea meets volcanic hot springs water, a luminous brew is born.

Perhaps the most spectacular grotto along the Algarve coastline.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

The world's oldest bookshop still in operation.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

One of the world's largest amber altarpieces is housed within this reconstructed medieval church.