One of the most important squares in Oslo. Beautiful, especially if you look towards the sea. Looking in the opposite direction, rather trivial. Dominated by the imposing town hall building, massive, but I wouldn't say beautiful. Also here is the Nobel Peace Center, housed in a not-so-impressive building. Also here you find the National Museum, which is to be inaugurated these days. The most interesting part is the touristic port, from where you go on cruises on the fjord or to the Bygdoy peninsula.