Diss is an English market community as well as selecting ward in the East Anglian area of Norfolk, near the boundary with Suffolk. It had a population of 7,572 in 2011. Diss train station is on the Great Eastern Main Line from London to Norwich. The town lies in the valley of the River Waveney, round a mere covering 6 acres (2.4 ha) and as much as 18 feet (5.5 m) deep, although there is one more 51 feet (16 m) of mud. The town takes its name from dic an Anglo-Saxon acceptation either ditch or embankment. Diss has a variety of historic structures, including an early 14th-century parish church as well as an 1850s corn exchange still in operation. 4 miles east of Diss is the 100th Bomb Group Memorial Museum at the former RAF Thorpe Abbotts landing field. In March 2006, Diss came to be the third town in the UK to join Cittaslow, a global organisation advertising the idea of "Slow Towns". Nonetheless, it has because left this initiative.