Thanks to Dubrovnik's location in the southernmost part of Croatia, day trips to nearby Montenegro are easy - the border is only an hour from Croatia's most popular city.
Just over the Montenegrin border lie a number of coastal towns, such as:
Kotor is one of the most popular towns in Montenegro. Located in the Bay of Kotor, the city retains a strong Venetian influence and its walled Old Town is a UNESCO World Heritage site.
Another Montenegrin coastal city, Herceg Novi is located at the entrance of the Bay of Kotor, at the foot of Mount Orjen. The city is one of the youngest settlements on the Adriatic coast, yet offers up plenty of sightseeing opportunities.
Further down along the coast, Budva lies roughly 2.5 hours from Dubrovnik. This popular resort city is full of young sun-chasers in the summer months, making for crowded pebble beaches and a bustling nightlife scene.