A new exhibition at the riba Architecture Gallery, 'A Garden and Three Houses', features Peter Aldington's group of three 1960s houses at Haddenham, Buckinghamshire (above), and the celebrated garden (left) that he and his wife have made there. 'I know of no other garden which packs such riches into so small a space with such beautiful and interesting plants,' says Sir Peter Shepheard. Last year the Turn End Charitable Trust was formed to maintain the garden in perpetuity and open it to the public. Accompanying the exhibition, which runs from 17 April to 1 May, is a book by Jane Brown with photographs by Richard Bryant (A Garden and Three Houses, Antique Collectors' Club, £19.95. Details 01394 385501).