The Bay of Kotor is located in south-western Montenegro on the Adriatic Sea. It is one of Europe’s most beautiful bays and often mistaken for a fjord, but is in fact a submerged river canyon.

The bay is composed of several smaller broad bays, united by narrower channels. The bay inlet was formerly a river system.

It is also the southernmost part of the historical region of Dalmatia. The bay has been inhabited since antiquity. Its well-preserved medieval towns of Kotor, Risan, Tivat, Perast, Prčanj and Herceg Novi, along with their natural surroundings, are major tourist attractions. The Natural and Culturo-Historical Region of Kotor was designated a UNESCO (United Nations Educational, Scientific and Cultural Organization) World Heritage Site in 1979. Its numerous Orthodox and Catholic churches and monasteries attract numerous religious pilgrims and other visitors.

More Info: en.wikipedia.org