 In response to the worsening security situation, William conducted his second northern campaign in 1069.He built another castle in York, on what is now Baile Hill on the west bank of the Ouse opposite the first castle, in an effort to improve his control over the city.This second castle was also a motte and bailey design, with the Baile Hill motte probably reached by a horizontal bridge and steps cut up the side of the motte.