Thielska Galleriet, at the far eastern end of Djurgården, is a must for Nordic art fans, with a savvy collection of late 19th- and early 20th-century works from Scandinavian greats like Carl Larsson, Anders Zorn, Ernst Josephson and Bruno Liljefors, plus a series of Edvard Munch's etchings of vampiric women and several paintings from a bridge you'll recognise from The Scream . (Ernest Thiel, a banker and translator, was one of Munch's patrons.) Free tours in English happen at 2pm Friday in summer.
There's also a plaster cast of Nietzsche's death mask in the top-floor turret, if you're into that sort of thing. (Thiel translated some of Nietzsche's work into Swedish.) The 1905 building, designed for Thiel by prominent Swedish architect Ferdinand Boberg, is on the small, worn-in side; it feels more like walking through a home (which, of course, it was) than a museum.