The tower was intended as a signal mast, attended by sailors who would be accommodated within the ground floor rooms, although these were in use as a tea room by 1820. Public access was available from the start, for a small fee. The rooms were later used to house the monument's caretaker. In 2009, as part of the "Twelve Monuments Restoration Project", the tower was comprehensively restored, including repairs to stonework and metalwork. The monument is a category A listed building.