Thanks to a man-made canal (Cavata, Kavuada, Cavanella) which enabled passage and navigation from one sea to the other, this is where the main transit traffic between the North Adriatic and Dalmatian coast took place in the past, making Osor an international port.
The foundations of the city walls reveal an ancient history, which can be traced back to the prehistoric era – 9th century BC. The name of the town, Osor – Apsoros, which is thought to originate from the ancient hero Apsyrt, brother of the unfortunate Medea, lends a mythical ambience to this town of yore.
The ancient town square with beautiful buildings from the 15th and 16th centuries, the town hall with its covered loggia (today the Osor Archaeological Collection – Museum of Lošinj), Bishop's palace and magnificent cathedral and bell-tower form the historical nucleus of this town.
In fact, the entire town of Osor is an open-air museum wherein artists of all eras left their mark, from the contemporary Meštrović to the ruins of the ancient walls, forts, the first early Christian basilica; a museum town whose green gardens and parks hide traces of prehistoric ancient villas, Renaissance portals and monasteries. A town, which is both a history and a museum, becomes a unique open-air stage of rich cultural events during the summer months, the most important being Osor Musical Evenings, which have been held in the summer since 1976.
The tourists are offered an organised and regulated private accommodation in the town, while outside the town, by the sea, there are two camping sites with beaches and restaurants.