3Kotor, Montenegro

Nestled at the head of a secluded bay in the Adriatic Sea, Kotor is a picturesque fortified town surrounded by towering mountains and medieval walls. The town’s fortifications, which date back to the 9th century, are among the best-preserved in the Mediterranean and are a UNESCO World Heritage Site. Within the walls, visitors can explore historic landmarks such as the majestic Cathedral of Saint Tryphon, stroll along the cobblestone streets of the Old Town, and climb to the top of the city walls for panoramic views of the bay and its surroundings. With its stunning scenery and rich history, Kotor is a must-visit destination for lovers of medieval architecture.