Strängnäs Municipality is a Swedish municipality in Södermanland County, in central Sweden, located by Lake Mälaren. Its seat is in Strängnäs with 15,000 inhabitants. Along with the city of Strängnäs, the municipality is also made up with the city of Mariefred. Strängnäs is the episcopal see of a former Romancatolic and present Lutheran bishopric, with the Strängnäs Cathedral, (...)