17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Abandoned ship reimagined as a street art canvas.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

The sea once considered an ecological wasteland is now called "crown jewel of avian biodiversity" by scientists.

A hand-built folk art installation covered with messages of God's love.

Version of the French Riviera destroyed by the sea.

The ghostly remains of an accidental sea.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

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

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.