Museum Smidt van Gelder, Beaux-Arts townhouse museum in Belgiëlei, Belgium.

Museum Smidt van Gelder occupies a four-storey stone townhouse on the Belgiëlei in Antwerp, rebuilt in 1905 by architect Joseph Hertogs as the Beaux-Arts city palace Hotel Thys. Its facade has a grey plinth with four small square windows, two storeys of five tall windows each, an ornate iron balcony across the three central upper openings, three round windows between pilasters, and a triangular pediment filled with relief sculpture. A large arched doorway with dark metal gates stands to the right.

The building was remodelled in 1905 as the city palace Hotel Thys for banker Edouard Thys-Cateaux, designed by Joseph Hertogs with an 18th-century-style interior. Pieter Smidt van Gelder bought it in 1937, saving it from demolition, and donated it to Antwerp in 1949 on condition he could live there until his death; it opened as a museum in 1950. A fire on 2 February 1987 closed it, and a planned 1993 reopening never happened. Restoration, begun in 2002 and halted by stability problems, was completed in spring 2025.

The museum displays European decorative objects from several centuries, presented throughout the residence to show the collecting passion of its former owner. Visitors can encounter furniture, paintings, books, ceramics, porcelain, and glass spanning 1600 to 1900, understanding how such items shaped the lives of the wealthy classes.

The building and its garden were listed as a monument in 2002 by minister Paul Van Grembergen. Restoration began that year but stopped after stability problems; work resumed in 2022 and was completed in spring 2025. The museum itself closed after the 1987 fire and never reopened, so the house is not currently open to visitors.

The collection of precious book bindings was transferred to the Antwerp City Library in 1964, well before the 1987 fire, and is kept there rather than in the museum. The rest of the collection went to a depot after the museum closed and is shown only occasionally in other museums.