Much of the artist Richard Wilson's work over the last 20 years has addressed the physical or perceptual boundaries of architecture. He's probably still best known for his installation 20:50, in which spectators edge their way one at a time along a tapering gangway into a brimming pool of sump oil: an experience which both focuses and destabilises perception, as you see a perfect mirror image of the room in the oil but remain unsure just how much oil is there - and uncertain too about the way the installation is constructed and quite how precarious your position might be.
But as a new book from Tate Publishing (£14.99) reveals, many of Wilson's other projects have produced strong, sometimes disconcerting images, often through the physical displacement or dismembering of architectural elements.
In one permanent piece, Over Easy, at the Arc Trust, Stocktonon-Tees, a whole section of the facade revolves. Pictured is one of Wilson's excavations, at London's Serpentine Gallery in 1996. His latest project is at the Storey Gallery, Lancaster, until 1 April (www. storeygallery. org. uk).
Some of Wilson's pieces bring to mind the late Gordon Matta-Clark, whose 'cuts' through derelict buildings created spatial sensations that were essentially Baroque. For six consecutive Tuesdays, from 28 February, Gavin Stamp will run a course called An Introduction to the English Baroque. This combines lectures at the Art Workers Guild in Bloomsbury with visits to such sites as the London churches of Nicholas Hawksmoor, Vanbrugh Castle and Blenheim Palace. Details on the course are available from the World Monuments Fund in Britain, 2 Grosvenor Gardens, London SW1W 0DH (tel 020 7730 5344).
Stamp was a contributor to the landmark exhibition at the Hayward Gallery in 1981 which revived Edwin Lutyens' reputation. On Saturday 18 March there will be a study day on Lutyens at Hestercombe Gardens near Taunton - one of his most successful collaborations with Gertrude Jekyll - with structures that include his Grade I-listed Orangery. Among the promised speakers are Colin Amery and Margaret Richardson (institute@hestercombe gardens. com).