The fortification plans from 1683 called for a girdle of defences around the dockyard and the town. A large number of bastions connected by fortified walls would form an effective bulwark from attack both from land and sea. However, there was neither sufficient time nor financial resources available for this project, and in 1694 it was decided that a wall, an Enclosing wall, with a number of gateways should only be built around the harbour and dockyard area. Of many planned bastions only the Aurora Bastion on the eastern side of Trossö has survived until the present. Work on the Enclosing wall continued until the end of the eighteenth century. In the nineteenth century the authorities started to demolish the wall. Some sections of the wall can still be seen in the quarter to the north of Varvsgatan.