Piet Vollaard is an architect and architectural critic working in Rotterdam. Besides monographs on both featured architects; 'Herman Haan, architect', Rotterdam (1995) and 'Hinder en ontklonteren, architectuur en maatschappij in het werk van Frank van Klingeren' with Marina van den Bergen, Rotterdam (2003), his publications include several Architectural guides to the Netherlands with Paul Groenendijk, Smart Architecture with Jacques Vink and Ed van Hinte, Rotterdam (2003); Positions, six Dutch architecture photographers with Simon Franke and Allard Jolles, Rotterdam (2010); Making Urban Nature with Jacques Vink and Niels de Zwarte, Rotterdam (2017), on nature-inclusive design in an urban context. He was founder and editor in chief of ArchiNed (1996-2013), and visiting teacher at several architecture schools in the Netherlands. His current activities focus on urban nature in a designer and ecologists collective The Natural City, and Stad in de Maak / City in the Making a collective of architects, designers and artists working in the field of commoning and activating empty buildings and related urban activism.