 Hadleigh is known for its castle, and the country park to the south of the town centre.This gives its name to the local government district of Castle Point, with its extensive views overlooking the Thames Estuary.Most of the facing stones were stripped from the castle in the 16th century – the only bits still visible today being high inside the surviving towers and a small section of the 'gate house' – so most of what remains today is the rubble infill that was packed between the outer facing stones.