Castell de Sant Esteve de Mar is a ruined medieval castle perched dramatically on a clifftop promontory near Palamós in Girona, with origins traceable to Roman settlement and possibly Iberian habitation. Though constructed in the 12th century, the fortress was purchased and granted royal significance by Peter II of Aragon in 1277 as part of the planned development of Palamós as a royal port. By the 14th century the castle had transitioned to private ownership and later served maritime surveillance roles against piracy. Accessible via the scenic GR 92 long-distance footpath connecting local beaches, the castle's remaining tower bases and walls offer visitors a glimpse of medieval coastal defence architecture.
