Gothenburg was founded in 1621 at the direction of King
Gustav II Adolf. Construction beginning in 1624 under the leadership of engineers, Captain Johan Schultz (Schouten) and Johan Jacobssen Kuyl (Kuhl), following a design by chief engineer Johan Rodenburg. The works were based upon the well-established Dutch school of fortification. When military engineer
Erik Dahlberg (1625–1703) took responsibility for Sweden's fortifications in 1676 he implemented the wishes of King
Karl XI for modern
bastions of high wall construction. The ramparts were lined with walls of blasted rock and the fortified town of
Gothenburg developed with 13 polygonal bastions and accompanying
moat,
ravelins and 3
city gates (
Kungsporten;
Nya porten, later renamed
Drottningporten; and
Karlsporten/
Hållgårdsporten). Gothenburg was growing rapidly by the end of the 1700s while the fortifications had suffered from poor maintenance. Demolition of the fortifications began in 1807, and was completed within ten years. The only surviving piece of bastion is Carolus XI Rex (named after King
Charles XI of Sweden), on the side of the Lilla Otterhällan hill. ==See also==