Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

This small island, a byproduct of 19th-century canal construction, is now home to a charming Japanese garden.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Old vessels have been transformed into artistic canvases in this unusual cemetery.

The largest underground church in Europe.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

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

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

This enchanting natural park is a magical example of a temperate rainforest in Europe.

The crumbling ruins of an abandoned 12th-century monastery.

Blue-green pools and smooth stones comprise one of Spain’s most idyllic hidden wonders.

A submerged village appears when dam levels drop.

Local lore says the devil built this beautiful medieval bridge to help a fleeing bandit.

A small Portuguese cottage formed between boulders in the countryside.

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

An abandoned mine now resembles a post-apocalyptic landscape of derelict buildings and blood-red pools of water.

Perhaps the most spectacular grotto along the Algarve coastline.

This Roman arena once played host to bloody gladiatorial battles.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

Mountain where Jesus was first tempted by the Devil.

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

This semi-secret storybook hedge maze is also the oldest garden in the city.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.

The deserted pirate-themed restaurant still entices explorers.