Knidos

The ruins of ancient Knidos, also known as Cnidos, sit on the very tip of the
Datca Peninsula in Turkey. The city was built on the end of this peninsula and
also on the neighboring island, which was once connected by a bridge or
causeway and is now connected by an isthmus. This once bridge and now
isthmus created two natural protected harbors still in use today. The northern
harbor was further protected by two walls, the remains of which are still
guarding the entrance to this harbor.