The purpose of this chapter is to descrbe the architecture of approach, entrance and movement within the Romano-British house. By modern standards a disproportionate amount of space in the Roman house was set aside for public and social functions. In the villa at Boxmoor in Hertfordshire, for instance, almost two-thirds of the floor space was taken up by the portico and principal reception rooms (Neal 1974). This was not unusual. In a fourth-century house at Cirencester a third of the house was occupied by the baths whilst another third was given over to a large end reception room (McWhirr 1986). Ancillary structures and upstairs rooms may have provided additional space, but the relative importance of reception space cannot be denied.