Bird's-eye view of Millbank Prison

A bird's-eye view of Millbank Prison, illustrated on page 232 of 'The criminal prisons of London and scenes of prison life' by Henry Mayhew and John Binny. "The ground-plan of the prison itself resembles a wheel, of which the governor's house in the centre forms the nave, while each two of the spokes constitute the sides of six long pentagons with triangular bases, and divergent sides of equal length, at the end of each of which stands a turret or tower, with a conical slate roof, and a number of vertical slits for windows. From the two towers the lateral lines converge at equal inclinations towards the apex, so that each of the pentagonal figures presents a triangular front."