On 18 April Spinola ordered another assault this time on the "Western ravelin". The sixth bulwark, "Bastion Ravelin", is no longer visible. Since 2002, the union has been situated at the north end of Ravelin Park. It is a pentagonal fort, with five bastions and a ravelin on the western side. On 3 June, a party of Janissaries managed to seize the fort's ravelin and ditch. The entrance to the fort is in the southwest, protected by a ravelin. The fight lasted half an hour, after which the Spaniards took the ravelin. The east ravelin of the castle was enlarged and used to house the court kitchens. Then, Lauria set sail for Gozo, attacking the island and taking its ravelin. In 1876 explosive demolition testing was carried out on the ravelin. There are now only three ravelins as Ravelin Wilhelm was removed in the 19th century. A ravelin was hastily constructed months before the 1565 siege. A ravelin was added at Landport where the London road entered the city. In 1507, a defensive bastion or ravelin was added to protect the castle entrance.