The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

This funky former tobacco factory is one of the most striking examples of Madrid's cultural diversity.

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

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

The world's largest wooden structure.

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

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

The extravagance of Portugal’s "Pink Palace" resulted in a noble title being awarded to its owner.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

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

Dead weights honor the dead of Portugal's fishing industry.

Perhaps the most spectacular grotto along the Algarve coastline.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

The best place in the world to buy tinned fish.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

A unique seaside cave where Aleister Crowley faked his own death.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

A fortress off the West coast of Portugal that dates back to 1502.

A naturally occurring amphitheater carved by erosion into the mountainside.

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