This Culture Show special is fronted by Kevin McCloud and comes live from the Roundhouse in London for the announcement of the Royal Institute of British Architects' Stirling Prize. Now in its 15th year, the RIBA Stirling Prize is awarded to the best new European building 'built or designed in Britain'. This year's shortlisted buildings are: Bateman's Row, a mixed-use development in East London by architects Theis & Khan; two schools - Christ's College, Guildford, designed by DSDHA, and Clapham Manor School, by DRMM; and three museums - the Ashmolean in Oxford by Rick Mather, Maxxi in Rome by Zaha Hadid, and the Neues Museum in Berlin by David Chipperfield. Tom Dyckhoff presents short films about each of the shortlisted buildings, puts their different styles into context by explaining how each building relates to the principles of modernism, and looks back at the history of the Stirling Prize. Kevin McCloud talks to the Stirling Prize judges about their thoughts on all six of the shortlisted buildings, and Ruth Reed, RIBA president, announces the winner of this year's Stirling Prize.