Oslo Bymuseum (Museum of the City of Oslo) (Frogner Manor)

From www.frommers.com:

Housed in the 1790 Frogner Manor at Frogner Park, site of the Vigeland sculptures, this museum surveys the history of Oslo. It also contains mementos of Henrik Ibsen, from the chair and marble-topped table where he sat at the Grand Café to the glasses from which he drank.