Hallwyl Museum

Constructed between 1893 and 1898, the Hallwyl House was designed by the prominent architect Isak Gustaf Clason. The building is a late 19th-century city palace inspired by Hispano-Venetian models, drawing on medieval and Renaissance Venetian architecture. The exterior features red sandstone and a compact urban plan with approximately forty rooms stacked on five levels around a formal entrance and a square inner courtyard. The structure was equipped with modern utilities for its time, including electricity, central heating, telephones, and indoor bathrooms, while later additions included an elevator. The basement housed service areas, the ground floor contained reception rooms and business offices, and upper floors held private apartments and leisure spaces like a bowling lane and photographic studio.

The Hallwyl Collection comprises roughly 50,000 catalogued items, meticulously documented in 78 volumes of ledgers completed in 1955. The collection was tailored to Wilhelmina's interests and includes Dutch and Flemish art, antique furniture, silver, and European and East Asian porcelain. Beyond fine art, the museum holds a vast array of ethnographic and everyday objects, such as arms, toys, and household items, reflecting the couple's lifestyle. Notable specific items mentioned in historical records include gold-plated taps, 16th-century tapestries, a Steinway grand piano with a custom shell, a black Daimler-Benz car in the garage, and preserved stables that still retain the scent of horses.

The Hallwyl Museum is significant as one of the best-preserved examples of a turn-of-the-century aristocratic home in Sweden, offering a unique glimpse into the domestic life and collecting practices of the era. The museum's statutes uniquely require that the director be a woman holding a doctorate in philosophy and of the Protestant faith. Administratively, it is part of the National Historical Museums (since 2018) and was classified as a historic monument in 2015. The preservation of the interiors, combined with the detailed inventories and the practice of staff wearing early 20th-century dress, creates an immersive historical environment that distinguishes it from typical art galleries.