The main entrance to the Ivory Tower is a great arch at ground level, high enough to admit a coach and horses. There are no windows and no other sources of light; the ground floor is a huge shadowed vault. An open framework just inside the entrance is the lift-shaft, and the centre of the tower is occupied by a wide column of stone that runs upward like a supporting pillar. Through a doorway at its foot, the beginning of a spiral staircase can be seen.

A series of partitions close to the opening arch look as if they might once have been stalls for horses; further back there is a closed door that might once have led to a harness-room, and a stack of bicycles leaning against the wall, although in the dim light it is hard to tell which colour is which. Through the arch, a short stretch of gravel bordered by shrubs leads down into a narrow walled street — to the left, a worn path leads off around the foot of the tower and out of sight into the gardens.