Kotor sits at the head of a beautiful, fjord-like bay, hemmed in by glowering mountains. The compact, walled old town is Montenegro’s star attraction, a warren of little alleyways and shady squares that is often described as a ‘mini Dubrovnik’.

Draped in vineyards and olive groves, the verdant Croatian island of Korcula is famous for its white wine and is said by some to be the birthplace of Marco Polo. The main settlement, Korcula Town, bears more than a passing resemblance to Dubrovnik, with a historic centre encircled by medieval walls and towers.

Croatia’s second city enjoys a dramatic setting, hugging a sweeping bay against a backdrop of sheer grey mountains. Split's labyrinthine old town is contained within the remarkable Roman ruins of Diocletian’s Palace, a UNESCO World Heritage Site, and spills out onto the buzzing seafront Riva promenade.

Pretty little Piran grew rich thanks to the salt trade, and thrived under both the Venetian Republic and the Austro-Hungarian empire. The well-preserved old town is the highlight of Slovenia’s short stretch of coastline, set on a small peninsula jutting out into the Adriatic.