The creator of Nolhaga is the entrepreneur Jonas Alströmer, one of the six founders of the Royal Swedish Academy of Sciences. He expanded the central building of his estate into …
Ruins of the royal castle of Ragnhildarholm, built around 1250 by Håkon Håkonsson. The castle consisted of a rectangular wall enclosing a courtyard with buildings. The castle housed Norway's southernmost royal residence and was in use for approximately 50–60 years.