One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

This tree, over 500 years old, was planted by Columbus’s son.

Spain's largest bullring offers a unique glimpse at architecture and history.

An eerie collection of the surviving structures from a past celebration of the future.

A 16th-century Andalusian palace.

Its appearance in "Game of Thrones" may spur on the long-awaited restoration of this medieval shipyard.

The world's largest wooden structure.

The final resting place of the great navigator, or maybe his brother.

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

Rare karst landscape eroded from a flat seabed.

A New York–based physician returned home to Spain to build his own elaborate monument to Christopher Columbus.

Mysterious texts covered in mystical symbols were found in caves at this site centuries ago.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

This Moorish fortress has guarded Málaga from the slopes of Gibralfaro hill for nearly a thousand years.

The gardens and chambers of this Moorish citadel conjure memories of the Alhambra.

A lake island of richly decorated monasteries, where a fugitive ruler met his end

Believed to be the only Orthodox church in the world that features a free-standing pulpit.

This stone tower was built to protect Crete from incoming pirates.

One of the best-preserved medieval streets in Europe.

A series of waterfalls create the illusion of perpetual rainfall in this hidden gorge.

This black sand beach was crafted from volcanic explosions including the historic Minoan eruption.

What once sat in the world’s spotlight is today a largely disused ghost complex.

This 13th-century monastery chiseled into the side of a mountain is equipped with a bridge that can be lifted to protect against raids.

One of the largest single-span stone-arch bridges in the Balkans looks like something straight out of a fairytale.