Borsh Castle
Borsh castle is situated high upon the hillside, overlooking the town itself as well as the beach. It is known as Sopot Castle and dates back to antiquity, being built on an old acropolis. First mentions of the castle date back to the 13th century when its ownership changed hands among various despots of the time, of Greek origin. It was acquired by the Ottomans in the 15th century before being besieged by the Venetians in 1570.
Currently, it is best to call the site a ruin since its condition has not been notably improved over the years. However, inside the castle, you can also check out a 17th century mosque named the Hajji Bendo mosque, built during Ottoman Rule. Bear in mind, it costs nothing to visit the castle, but there are also no toilet or any other facilities so pack smartly if you intend on visiting. In some ways, I think this makes the experience better, as if you’re exploring off the beaten path to a place stuck in time (and not modernized to handle tourist traffic in any way).