Complex sentence: Tsuyama Castle had a complex of 77 buildings, that surpassed the 61 buildings of Himeji Castle and 76 buildings of Hiroshima Castle (広島城).
Split into simpler sentences: Tsuyama Castle had a complex of 77 buildings. This surpassed the 61 buildings of Himeji Castle and 76 buildings of Hiroshima Castle (広島城).