Aragonese Castle is a castle built on a small tidal island east of Ischia, at the northern end of the Gulf of Naples, Italy. The castle stands on a volcanic rocky islet that connects to the larger island of Ischia by a causeway.
Wikipedia https://en.wikipedia.org/wiki/Aragonese_Castle
Address Ischia 80077, Italy
Coordinates 40°43'52.671" N 13°57'52.942" E