Hallwylska Museet

Looking as if it’s straight out of an Agatha Christie murder mystery, this kooky fin de siècle palace was once the home of cashed-up Count Walther von Hallwyl and his wife Wilhelmina, a notorious collector who took hoarding to new heights. The mansion’s lavish rooms are packed with the fruits of her labour, from 16th-century tapestries and Flemish paintings to rare silver teapots, oriental guns, vintage toiletries and even her children’s teeth. For in-depth voyeurism, join the one-hour guided tour (in English; Skr40; at 1pm Sunday, and at 1pm daily from late June to mid-August).