FAB FEST is a week-long celebration of design and making, hosted by the Fabrication Lab from the Faculty of Architecture and the Built Environment at the University of Westminster. It invites creative designers from around the world to envision and build their ideas about architecture and the city. It features over 80 pavilions and installations designed internationally, manufactured in the Fabrication Lab, and assembled and installed in Central London.

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After five days of making, entertainment and international competition, FAB FEST opens to the local community, with lightweight, recyclable pavilions forming the transient architecture for a series of making events, live musical performances and a three-day exhibition.