The shortlist for the Stirling architecture prize has been announced by the Royal Institute of British Architects and includes The Hepworth in Wakefield, designed by David Chipperfield. Up against the Yorkshire art gallery is Populous’ Olympic Stadium in London; Belfast’s Lyric Theatre, designed by Dublin-based O’Donnell & Tuomey, who have been shortlisted three times previously, including last year with the An Gaelaras cultural centre in Derry; The Sainsbury Laboratory in Cambridge, designed by Stanton Williams. Rem Koolhaus's OMA is in the running twice with two nominations for their design of both Maggie’s Centre, a cancer treatment practice in Gartnavel, Glasgow and the New Court building in London, designed with Allies & Morrison, for the Rothschild Bank. The announcement as to who will win the £20,000 prize is to be made on 13 October.