A historic 18th-century castle-turned-residence has just been listed for sale by Spain Sotheby’s International Realty, with an asking price of roughly $4.6 million (4 million euros).

It was the “one that got away”. It became the “Holy Grail” of shipwrecks. Now, decades after treasure hunters claimed to have found its remains, the identity of the $26 billion Spanish galleon San ...

The sprawling building could originally house up to 96 people, with a barracks for troops ... Fast-forward a couple of centuries, the Spanish government decided to sell the property in 1956.