This is an experimental 'low-relief' terrace of houses against a sky backscene, length one-fifth of a Trainz baseboard (approx. 7 feet in OO scale), intended for a OO/HO virtual model railway layout. In the UK, low-relief buildings no more than an inch or so deep are used as part of a backscene and have front and sides only. These are double-fronted houses based on photographs of a recently cleaned and restored terrace in Norwich, England. 1932 polys - but quite a few houses.