AJ Working Details Until 3 April. An exhibition at the University of Luton, Park Sq, Luton. Details 01582 489103.
Jon Tollit Monday 6 April, 18.30. A lecture at the Architecture Centre, 6 King's Parade, Cambridge.
Carving Mountains Until 26 April. An exhibition of modern stone sculpture in England 1910-37. At Kettle's Yard, Castle St, Cambridge.