Grimstad is about four hours south of Oslo down the west coast of the Oslo fjord, and it's the home town of Reidar. It's also the hometown of Thor Hushovd—2009 Tour de France green jersey winner, for those of you who care.
So we came to Grimstad over the midsummer festivities. It's not really a festival but everyone does stuff. In this case we happened to be in a coastal town where everyone had boats or access to a boat or, in our case, a 30ft yacht.
So we did what every other Norwegian in the area does; sail out to a small rocky island in the archipelago and grilled some sausages.