Cities that walked, pop-up buildings, dream cities that emitted sexy scents and thrilling potential. Like their contemporary, Cedric Price who, sadly, died recently, the Archigram group built virtually nothing, and most have earned their living from teaching. But go and see the work of true subversives - Archigram were belatedly awarded a Riba gold medal in recognition of their contribution to the art form only last year. In any other country, they'd be government ministers.Archigram and Piranesi are both at Milton Keynes Gallery (01908 676900) 1 Nov to 7 Dec; Brighton Photo Biennial 2003, .uk More from Janet Street-Porter.

Once you've driven into it, you'll be spending hours trying to navigate your way out. But the MK G gallery there has mounted on some excellent exhibitions and next months sees a particularly inspired pairing: Piranesi's extravagant and atmospheric 18th-century etchings of imaginary prisons - and the architectural fantasies of the Archigram group, from the 1960s. I was a student at the Architectural Association in those days, and can still recall the thrill of having lecturers such as Peter Cook, with his bright-red specs and Op Art ties! I've carefully saved all their pamphlets and manifestos because they were so inspirational. I used the bins as receptacles for more swag, a pair of natty black skateboarder shoes, a black fleece (by now it was subzero in the shade, so this was legitimised as virtually a necessity), some wrapping paper with green elves on it and cards from the Pavilion shop.

This coming weekend sees the start of the Photography Biennial, with exhibitions and talks galore, so you've got another reason to visit Brighton and buy an architect-designed dustbin or a streamlined new blender.Blueprints for successIn my show I unkindly poke fun at Milton Keynes, the town with the most roundabouts in Britain. Apart from the regular smell of dope, a lot of dreadlocks on white people (always an iffy look) and many men with grey flowing beards, most shoppers in the Lanes seemed to be tourists or women in the latest D&G. I couldn't resist a hot-water bottle with little legs, a fly swatter, a corkscrew and some scales.I wanted to use the fly swatter on the many druggies and beggars that crossed my path during this shopping spree, but even I, dear readers, am not that brave. Gosh, it wasn't easy carrying that lot around, and then bin-shop lady told me of a super-trendy hair place and so I was off there to be transformed into a glamorous pseudo-comedian.