Walls of Dubrovnik

The Walls of Dubrovnik are a series of defensive stone walls that have surrounded and protected the citizens of the afterward proclaimed maritime city-state of Dubrovnik (Ragusa), situated in southern Croatia, since the city's founding prior to the 7th century as a Byzantium castrum on a rocky island named Laus.
The oldest systems of fortifications around the town were likely wooden palisades.Today's intact city walls, constructed mainly during the 12th-17th centuries,mostly a double line, have long been a source of pride for Dubrovnik. The walls run an uninterrupted course of approximately 1,940 metres (6,360 ft) in length, encircling most of the old city, and reach a maximum height of about 25 metres (82 ft).
Source: wikipedia
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