Zimmerwald was until 31 December 2003 an independent municipality in the Canton of Bern, Switzerland. It is located on a hill in the proximity of the city of Bern in the Bernese Mittelland. On 1 January 2004 Zimmerwald united with the municipality of Englisberg to form the new municipality of Wald.Population: 870 (31 December 2002) coats of arms: To three firs on green three-mountain before silver background become green.