After 400 years of being closed to the public, this monastery's underground tunnels and secret garden are now a museum.

This 19th-century aqueduct provides insights into how water was supplied to Victoria on the island of Gozo before modern plumbing.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

This cliff-face port is considered a masterpiece of mining engineering.

Packed with geological formations, an ancient river, and taxidermied seals, this overlooked coastal cave system is worth a spelunk.

Greenery covers the face of a gently-dripping waterfall deep in the mountains of central Sardinia.

On the coast of Sardinia, a once-great mining village is finding new life as a coastal resort town.

A former mining village that now operates as an open-air museum.

Once one of the largest sites of silver deposits in Italy.

A collection of sculptures that explore what's at stake when nature is thrown out of balance.

An eerie gravel road full of shards of red bricks leads to the ruins of a deserted factory.