The rectangular bailey forms a courtyard, the level part of which is called the Castle Green. When first built, the bailey was protected by earth ramparts, until a later stone curtain wall was built around it, protected by at least three mural towers, the foundations of some of which still survive. Much of the wall, including the south-eastern tower–called the Watch or Witch Tower–has been destroyed, although around a stretch long survives on the south-west side. The foundations of various, mostly 13th-century buildings excavated during the 20th century can be seen within the bailey, including the great hall, across; a long narrow hall, possibly used as a courtroom; and a large kitchen. A Victorian cottage is positioned by the south gatehouse, probably on the site of the earl's hall and chamber.