Ice cream stand, snack bar, and time capsule of milk conveyance.

The site of Paul Revere's historic two lantern warning.

This abandoned, partly demolished building is now home to beautiful graffiti and murals.

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

An abandoned tuberculosis hospital said to be haunted by the patients who died within its walls.

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

An 11th-century medieval castle cascades over the town of Numão.

In Spain, the ruins of a Roman military camp sit along a flooded section of a river.

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

Built by crowdsourcing, this wooden foot bridge saved a part of Rotterdam that was languishing in wait of city funding.

A nearly 25-foot concrete sculpture of Sylvette, Picasso's muse.

Abandoned Nazi train station turned underground astroparticle laboratory.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

The vast chamber inside this abandoned cooling tower looks like something out of a sci-fi dystopia.