Osor is a historical town known as a museum town. It is located on the southwestern part of the island of Cres. Its former name is Apsoros. It was built next to a canal with a movable bridge, which is also the only road connection between the two islands and a tourist attraction.
Osor used to be an international port. This was due to the dug canal (Kavuada, Cavata, Cavanella), which made it possible to pass and sail from one sea to another. The main transit traffic between the Dalmatian coast and the northern Adriatic ports took place here. In the period of the Romans and in the Middle Ages, the city was surrounded by walls, which have been partially preserved to this day. In the lower area of Osor there are large stone blocks, which are the graves of the first inhabitants from the 9th century BC. The buildings bear family coats of arms and also have well-kept gardens. The ancient city square represents the historical core of the city.
On it stand beautiful buildings from the 15th and 16th centuries, the town hall with a covered loggia, the church of St. Mary, which is the former town cathedral, the bell tower on the horsetail, the bishop's palace with a lapidary, and the former water reservoir. The former municipal palace or forum now houses the city museum. The square and nearby streets are decorated with statues of musicians.