No trip to Montenegro would be complete without a visit to the pretty town of Kotor, which resembles Dubrovnik a lot, but is slightly less crowded (altough it does receive plenty of cruise ships). With a similar Venetian-influenced past, it features many fine historic buildings, including St. Tryphon's Cathedral, an interesting maritime museum, and impressive city walls. Unlike Dubrovnik's, however, they are hard to climb as they stretch from the sea all the way up the mountains. The WH site also consists of the smaller towns of Risan and Perast, as well as 2 offshore islands. The latter has a nice seaside promenade and a collection of well-preserved buildings. From there, you can also take a ferry to the island of Gospa od Škrpjela (Our Lady of the Rocks). It is the only artificial island in the Adriatic and features a beautiful Catholic church. The other island, St. George, features a Benedictine monastery, but is not normally accessible (unless you have a permission from the bishop...). Even though the site is called "Natural and Culturo-Historical Region of Kotor", it is only inscribed under cultural criteria. Nevertheless, the Bay of Kotor strongly resembles a Norwegian fjord and is the only such feature in the Mediterranean. Seen from the top of the coastal mountains, you can take in an incredibly beautiful panorama of bays, mountains, and islands that I think would justify a mixed site. Kotor and Perast are easily accessible by bus from the tourist resorts further down the coast, such as Budva, as well as from Podgorica.