Garden and rooms at the Geelvinck Hinlopen House

Between the entrance and the mansion is a spacious and quiet garden. The back of the garden is a Renaissance garden, while the front is a formal and symmetrical French garden with a large pond and a fountain.^[6] Most of the time there is an exhibition of statues. Going up the stairs to the main floor of the museum, there are four rooms open to the public.

Detail of the wallpaper in the Chinese room

The Blue room in a Louis XVI or neo-classical style has an ensemble of five wallpaper panels, painted around 1788 by Egbert van Drielst. Van Drielst was a romantic painter, who in his style was influenced by Meindert Hobbema and Jacob van Ruisdael. On all the panels nature is idealized, the horizon is on eyeheight. Originally the panels were designed for a house on the Keizersgracht, then decorating a room in New York and Miami, but since 1990 they are back.^[7] On the chimney are two porcelain jars from the factory of Joannes de Mol.

The Red Room is decorated in either a Louis XV or a neo-Rococo style.^[8] The high ceiling and the fixed mirrors are impressive.^[9] There are six 17th-century paintings in this room: a Flamish fantasy landscape with tree, game and birds by Gillis d'Hondecoeter; also depicting Christ healing the blind. Further there is still life with flowers but without a saint by Daniel Seghers, a Jesuit from Antwerp, a flashy still life by Pieter de Ring, a seascape by Hans Goderis and a winterscape by Antonie van Stralen. On the table is an interesting piece of Kraak porcelain.

The ceiling in the library is in a neo-classical style, resembling the work of the Scottish architect and interior decorator Robert Adam.^[10] Adam, was inspired by the Domus Aurea in Rome and the palace of Diocletian in Split.^[7]

In the hall one can see a tapestry, made in Brussels around 1600, depicting Cyrus the Great and the rich Croesus, after his defeat and the revolt of the citizens. The story comes from Herodotus, (book I: 155). The carton was designed by Michiel Coxcie, the Flemish Raphael, and the original belongs to the Spanish royal family.^[11]

The Chinese Room has eight Rococo wallpaper panels on canvas with fantasy flowers and birds, vegetables and chinoiserie, made somewhere between the years 1765–1775. The artist, working in the cuir de Cordoue manufacture of Cornelis 't Kindt in Brussels, perhaps used engravings by Jean-Baptiste Pillement, then famous for his Chinoiserie.^[12] The table is in scagliolatechnique, and once belonged to Frederick William III of Prussia.^[13]

• In June the museum used to participate in the Open Garden Days.^[14]
• The museum programs concerts, sometimes on historic fortepianos, such as the Broadwood square piano; this program continues now in other historic houses and castles, such as the Posthoornkerk and Castle Heeswijk (near Den Bosch), where the museum has located some of its historic pianos.
• The first exhibitions in the museum was in 1991 on Antoine Ignace Melling.^[15]

By the end of 2015, Museum Geelvinck had to move to new premises. Since Spring 2017, the Geelvinck Muziek Museum opened for the public at the historic house 'De Wildeman' in Zutphen (till end of 2016 this was the Museum Henriëtte Polak, which had moved to the 'Hof van Heeckeren'). Museum Geelvinck was forced out of its Zutphen venue already by the end of 2019 and since moved to the country estate 'Kolthoorn House' in Heerde. Since 2012, Museum Geelvinck also has a modest venue in the 'Posthoornkerk' in Amsterdam (the collection of historic pianos is on view by appointment only). Museum Geelvinck collaborates in the partnership 'Geelvinck Muziek Musea with the Pianola Museum and Huis Midwoud (Midwoud). Museum Geelvinck continued its weekly Geelvinck Salon concert series first in the Museum Cromhouthuis in de Cromhouthuizen and, since the closure of this venue, starting in Autumn 2018 in the Luther Museum Amsterdam.