The Castel dell’Ovo is one of the most prominent old symbol of the city. This castle rises up on an islet called Megaride and is directly linked to the mainland by a isthmus. Its name derives from an old legend: according to this, Virgilius hid an egg in a cage placed in the castle basement; this secrecy was necessary because every event in the city would have derived from it. During Queen Joanna I’s Kingdom, the castle suffered some damages because of a partial collapse of the natural arch on which it is built. The Queen had to swear that she personally replaced the egg in order not to scare the population for fear of disasters.