 The town's authorities built Britain's first pedestrian precinct, and first modern-style residential tower block, The Lawn, constructed in 1951; it is now a Grade II listed building.Gibberd's tromp-l'oeil terrace in Orchard Croft and Dawbarn's maisonette blocks at Pennymead are also notable, as is Michael Neylan's pioneering development at Bishopsfield.The first neighbourhood, Mark Hall, is a conservation area.