The Castel Nuovo in Naples, Italy, was built on the only way to enter Naples at that time. The Castel Nuovo was named "new" because it was compared to the older castle in Naples. The Castel Nuovo was both a royal palace and a defensive fortress, and it played a pivotal role in the city's defense system. The Castel Nuovo is located on a high slope by the sea in Naples, in front of the Naples Town Hall Square, and is one of the famous landmarks of Naples. The castle's walls consist of five cylindrical towers, which are connected by city walls. The battlements on the walls and towers are staggered, which are quite rugged and masculine in medieval architecture.