The Lipstick (or GöteborgsUtkiken) is the name of a tall building at Lilla Bommen.
86 metres up there is a cafe with a wide view over the city.
Its a lovely walk along the canal from Drottningstorget to Kungsportsplatesen along Stora Nygatan. On your left is the park, Tradgardsforeningen and lovely buildings on your right
Gothenburg has several canals to offer--I can't remember the history, though some Dutch people were involved in its history, as well as its (continued) importance as a port.
The remaining canals in the central area of Göteborg are still an interesting feature within the street pattern.