Osor is a town in the southwestern area of Cres, which represents the island from its most beautiful side. It is a museum town that was built next to a canal with a movable bridge, which is also the only road connection between the islands of Losinj and Cres and a local landmark.
The canal was built with the intention of significantly shortening it sailing between Dalmatia and ports in the Northern Adriatic. The town was an important trade center until the 15th century, which became neglected due to sea voyages, plagues and malaria. Osor was surrounded by walls in the Roman era and in the Middle Ages. Today, the city wall is partially preserved, and the remains of the former cemetery and the ruins of the Benedictine monastery lie next to it. The ruins of a former Franciscan monastery can be found a little outside Osor, in the Bay of Bijar with a sandy beach. In the lower area of the city, there are large stone blocks, which are the graves of the first inhabitants from the 9th century BC. Above the city walls stands the Church of St. Mary, which is the former city cathedral, and there is also a cemetery next to the church.
The entrance to the city was decorated with a Venetian lion. Osor's buildings bear family coats of arms and have well-kept gardens. In the ancient town square there is a former water reservoir and a bell tower on a horsetail.