Strong towers were added to curtain walls to watch out for enemies. At first, castle towers were square but they were replaced with round towers which were stronger and harder to destroy.

the government decided to add walls surrounding the watch tower when the threat of invasion from Spanish King Philip IV's fleet became imminent. Montjuïc Castle ended up defending the city from ...

The replica of the castle tower built in the 17th century, including the stone wall that supports it, is about 2 meters high, just one-30th the size of the original, believed to be the biggest ...