He approaches a clerkly-looking man, sitting under the corner arch, and makes his bargain.

Nancy Goldring has contributed an evocatively stylized set consisting of a slightly mismatched-seeming cornered arch and low-lying architectural remnant.

We were in a four-oared Thames Police Galley, lying on our oars in the deep shadow of Southwark Bridge - under the corner arch on the Surrey side - having come down with the tide from Vauxhall.

The dome is 12.50 meters in diameter and 24.50 meters high on an octagonal drum of eight arches, with semi-domes at the corner arches and larger semi-domes joining the arches above the mihrab and the central bay of the narthex.