Trondheim Luxembourg. Broad avenues like "Munkegaten" were created, with no regard for property rights, in order to stop the next fire. At the time, the city had a population of roughly 8000 inhabitants. After the Treaty of Roskilde on 26 February 1658, Trondheim and the rest of Trøndelag, became Swedish territory for a brief period, but the area was reconquered 10 months later. The conflict was finally settled by the Treaty of Copenhagen on 27 May 1660. During the Second World War, Trondheim was occupied by Nazi Germany from 9 April 1940, the first day of the invasion of Norway, until
Trondheim city and its citizens were also subject to harsh treatment by the occupying powers, including imposition of martial law in October 1942. During this time the Germans turned the city and its environs into a major base for submarines (which included building the large submarine base and bunker DORA I), and also contemplated a scheme to build a new city for 300,000 inhabitants, "Nordstern" ("Northern Star"), centred southwest of Trondheim, near the wetlands of Øysand in the outskirts of Melhus municipality. This new metropolis was to be accompanied by a massively expanded version of the already existing naval base, which