There used to be a wall that separated the Inner Ward from the Outer Ward. The wall, which was inside the castle, had a drawbridge and a gate. There was also a ditch which made it hard to cross if the gate was closed. In the 16th century, the ditch was filled up so people could walk over it and the drawbridge was removed. This is where the spring that the castle gets it water from is located. The well is deep. The Inner Ward is where the royal guests and residents lived. It is also where their staff and servants lived. The royal bedrooms, also called "chambers", are considered the finest preserved in England and Wales. The Inner Ward was supposed to look like a very small version of a royal palace. The reason the wall, gate, and ditch were built was so that if there was an emergency or an attack, the Inner Ward could be sealed off from the Outer Ward, which would fight against invasions.