Annuska Pronkhorst is an architectural historian and became partner of Crimson Historians & Urbanists in 2004. With Crimson she works on many projects in the field of Dutch urban planning, architecture and cultural heritage, combining historical research, urban strategy and project development. In 2007-2013 she worked as program manager for Hofbogen BV and was responsible for the physical and conceptual redevelopment of a nineteenth century elevated train line running through the centre of Rotterdam. In 2018 she became member of Amsterdam Committee for Spatial Quality. The committee advises the municipality of Amsterdam on the integral quality of the physical environment: urban planning, public space, cultural history and monuments. She is a member of the Supervisory Board of an international contemporary art centre (Kunstinstituut Melly) and is involved in several advisory committees and juries.