The Centraal Museum shows a large number of objects outside of show-cases. Once a month, Iconoco cleans the dust off these collections.
A part of the Centraal Museumﾒs collection is on permanent display outside of the museum. A selection of objects hanging in the City Hall as well as a part of the Rietveld collection are permanently installed in the Rietveld House on Prins Hendriklaan. A couple of times a year the collections in both the Rietveldhuis and City Hall are cleaned.