 The palace was originally surrounded by a medieval deer park . When the walls were built , streams were diverted to form the moat as a reservoir . In the 1820s , the grounds within the walls were planted and laid out as pleasure grounds by Bishop George Law , who created a reflecting pond near the springs . Parts of the buildings are still used as a residence by the current bishop , however much of the palace is now used for public functions and as a tourist attraction . 
