Research station devoted to mysterious floating lights seen in a Norwegian valley.

This Romanian village may have been drowned, but it is long from forgotten.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

A visionary precursor to the Internet made of index cards.

Sail in for a ’dam good slice.

The place where houses are born.

The portrait of a man from Japan who sent weekly letters to a Dutch hotel he never visited.

A landscape decorated with enormous skull sculptures.

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

Sculpture park built by a 50-year-old widow.

A Spanish town built into the cliffs.

A New York–based physician returned home to Spain to build his own elaborate monument to Christopher Columbus.

Rare karst landscape eroded from a flat seabed.

The extensive relics of an ancient Roman and Phoenician fish processing plant hide in a town park.