>>/39326/
That's an old fort, from the 19th century, maybe early 20th. The guns point toward a sea, so they were never intended to fire towards the land inside. So the hypothetical port I was talking about would have been and old one from the same time period. Now gone, only the fort remained (maybe it had alternative use later, like jail or ammo warehouse or something). I still guess there could have been a harbour. Or maybe the fort guarded the approach toward the bay. I dunno.