1. Forward-looking, modernized and modernizing, underground huge passage-tunnels with their own roundabouts and with downtown and government buildings above. Your new GPS, like ours advertised with up-to-date Europe, fell short in Norway, and especially in Oslo. Go it on your own.
Akershus is the old fortress-castle on the fjord. Parking is not difficult, even for ordinary tourist cars. Oslo's savvy electric car owners park here as well, with bicycles; and pedicabs, and recharge, plenty of room because of fine planning.