Abashidze and Nikolos Dadiani (consecration date). September – firstsite new art gallery, Colchester, England, designed by Rafael Viñoly. September 11 – National September 11 Memorial, Reflecting Absence, on the World Trade Center site in New York City, USA, designed by architect Michael Arad with landscape architect Peter Walker (dedication date). September 13 – Westfield Stratford City shopping mall, Stratford, London. October 12 – Royal Opera House Muscat opens in Muscat, Oman. October 20 — The Human Ecology Building at Cornell University is dedicated. Designed by Gruzen-Samton Architects (IBI Group). December 21 – Capital Gate skyscraper hotel and office building, in Abu Dhabi. Buildings completed January City of Westminster College, Paddington Green Campus, London, designed by schmidt hammer lassen architects. Heron Tower in the City of London, designed by Kohn Pedersen Fox. February 8 Spruce Street, a skyscraper in New York City, USA, designed by Frank Gehry. Sunset Chapel, Acapulco, Guerrero, Mexico, designed by BNKR Arquitectura. March 29 – London Olympic Stadium, designed by Populous. April – Metropol Parasol in Seville, Spain, designed by Jürgen Mayer. July 6 – Trump Ocean Club International Hotel and Tower, the tallest building in Panama and Latin America. July 27 – London Aquatics Centre, designed by Zaha Hadid. September CMA CGM Tower in Marseille, designed by Zaha Hadid. Aberdeen University New Library in Scotland, designed by Schmidt Hammer Lassen architects. October 20 — Milstein Hall at Cornell University, designed by Rem Koolhaas October 28 – ArcelorMittal Orbit, designed by Anish Kapoor with Cecil Balmond, erected at Olympic Park, London. November Canada Water Library in London Docklands, designed by Piers Gough of CZWG. Robert H. Jackson United States Courthouse in Buffalo, New York, designed by Kohn Pedersen Fox. dates unknown N M Rothschild & Sons' New Court banking headquarters in the City of London, designed by Rem Koolhaas's OMA, completed. Brockholes Visitor Centre, a floating wooden nature reserve centre designed by Adam Khan of Arca, opens near Preston, Lancashire, England. Eighth Avenue Place East in Calgary, Alberta Maggie's Centres, drop-in cancer care centres in Great Britain Maggie's Gartnavel, Glasgow, designed by Rem Koolhaas's OMA. Maggie's Nottingham, designed by Piers Gough and Paul Smith. Maggie's South West Wales, Swansea, designed by Kisho Kurokawa (opens December 9). Temporary Serpentine Pavilion in London, designed by Peter Zumthor. Folly for a Flyover, a 'pop-up' temporary arts centre in East London, England, designed by Assemble. New Hospital Pavilion, University of Chicago