	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. From 1894 to 1955 the Harlow parish formed part of the Epping Rural District of Essex. From 1955 to 1974, Harlow was an urban district.