Heinrichswil-Winistorf is a former municipality in the district of Wasseramt in the canton of Solothurn in Switzerland. The municipality was formed from the 1993 union of Heinrichswil and Winistorf. On 1 January 2013 the former municipalities of Heinrichswil-Winistorf and Hersiwil merged to form the new municipality of Drei Höfe. Heinrichswil is first mentioned in 1317 […]