The old city walls of Dubrovnik are one of its best-known features, now more than ever thanks to being featured in the hit TV series, Game of Thrones. 

Built in the 10th century and modified in the 13th and 14th centuries, these formidable walls—as high as six meters in places, and up to six meters thick—provided a solid defense against invaders. 

Totaling nearly two kilometers in length, Dubrovnik's city walls make a great spot for a casual stroll and offer numerous excellent views over the Adriatic and inwards over the old city center.