"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

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

The corpse bride of Portugal.

An archeological treasure trove stumbled upon by a couple of children.

Seaside ruins of a settlement that date back to the first century B.C.

The remains of an encyclopedic sculpture garden later used as an internment camp.

The mysterious remains of a martyred teenage saint are venerated inside a small country chapel.

Thanks to an acoustic anomaly, this unassuming stone bench has heard one hundred years of secrets.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

This star-shaped military outpost is now simply trying to protect itself from neglect.

This abandoned naval battery stood at the ready as recently as the 1980s.

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

A hidden three-foot-wide house separates these two regal churches.

The stunning interior of this Gothic church is covered in ornate gold details.

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

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Elaborate tile work in this railway station tells the story of Portugal.

Stormy conditions send jets of seawater bursting through holes in the cliffs.

Stuck in the middle of a modern Madrid city block are the remains of a 19th century sports complex.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.