dubrovnik, Croatia
Dubrovnik’s Old Town is completely surrounded by enormous stone walls that date back to the 10th century. Up to 6m (19ft) thick and 2.5m (8ft) high in places, Dubrovnik's Ancient City Walls were built to protect the city and deter would-be invaders.
You can walk along the entire (2km/1.2mi) length of the ancient walls today and it is one of the best ways to appreciate the majesty of the Old Town (and get some great views over the Adriatic sea).
There are 2 towers and 2 forts incorporated into the walls that were built and/or strengthened in the 15th century to bolster the city’s defences. The Minceta Tower protects the city’s northern edge; the Bokar Tower protects Pile Gate (the city’s main entrance); Lovrjenac Fort protects the west, and the Revelin Fort protects the eastern entrance.
 Dubrovnik, Croatia

 Dubrovnik, Croatia

 Dubrovnik, Croatia