Building owners can take out tiles for free at this repository for historic building materials.

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

A small but charming botanical garden that contains many exotic plant species.

An honorary saint of the people, Maria Adelaide became an incorrupt corpse, the clothes intact, exhaling “a strong scent of roses.”

Picturesque intersection of witchcraft and ancient Christianity.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

The world's largest sundial can cast a shadow more than 1,600 feet long.

This magnificent brick dome was made with an unusual design method.

An out-of-place grove of sequoias thrives in northern Spain.

Two large posteriors in one giant statue.

It's believed these prehistoric individuals were the victims of cannibalism.

The surviving remnants of a destroyed medieval church now stand in a public park.

Giant granite sculptures representing family on the northern coast of Spain.

The oldest Roman lighthouse still in use.

This panoramic lift provides a futuristic ride up San Pedro Mountain.

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

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

This beautiful spit of land was once the summer playground of the king of Spain.

Made up of 3,200 recycled glass bottles, this tree pays homage to Asturia's love of cider.

A fountain standing as a testament to a doomed alliance.

This crucial gathering spot along the "hippie trail" still displays old notes between traveling beatniks and backpackers.

This museum has a most unusual location: inside a giant, three-headed elephant.

A small memorial to a deadly night in Serbia that shook the world before it was swept under the rug.

A Serbian church lit by chandeliers made of weapons.