City (pop., 2000: 148,859), central Norway.
It is located on Trondheim Fjord, an inlet of the Norwegian Sea that extends 80 mi (130 km) inland. Trondheim was founded by King Olaf I Tryggvason in 997, and it prospered as a trade centre until the Hanseatic League made Bergen its chief port. The city declined until the late 19th century, when it was linked by rail to Oslo . Norway's third largest city, it is a major Norwegian land and sea transport link and a manufacturing centre.