Surrey stroll
Choose from more than 20 guided walks for all levels in the Guildford area, four to 21 miles in length. Heritage and historical themes vary, from wine making to Jane Austen. Sat/Sun. Phone 01483 444333 for a programme to register. £10 fee includes free shuttle bus to starting point at Burchatts Farm Barn, Stoke Park, Guildford, Surrey.
Middle-age spread
Fifteenth-century England is revisited in a new festival village at Warwick. Minstrels, working blacksmiths and knights on horseback. Sat/Sun, 10am-6pm. £10.95/£6.50, under 4s free, family £29. Warwick Castle, Warwick (01926 406600).
Going fission
Any atom-splitting questions can be answered for children at Sellafield Visitors Centre. The walk-in model of a power station, global pollution displays and mock-up of a nuclear reactor make the day go with a bang. Open daily 10am-5pm. Free. Seascale, Cumbria (01946 727027).
Autumn leaves
Not potted your bulbs yet? The Great Autumn Plant Fair at the National Trust's Beningbrough Hall will help. Sun 11am-4pm. £3.50/£1.70/family £8.70. NT members £1.20. Shipton-by-Beningbrough, Yorkshire (01904 470666).
Wales on canvas
The best works by Welsh artists are here, from 1900 to the present day, priced from £200. Open Mon-Sat, 10am-4pm. Free. The Museum of Modern Art, Heol Penrallt, Machynlleth, Powys (01654-703355).
Sea airs
Festival activities around Seahouses fishing harbour include dancing, singing, Northumberland piping, a performance of shanties by the local fishermen's choir, a children's walking procession and various seafood tastings. Sat/Sun, times and venues vary. Free. The Harbour, Seahouses, Northumberland (01289 301864).
Green power
Nature's World offers two major sustainable development projects - an eco-structure that's earth-sheltered using geothermal heating, and an indoor bowl-shaped garden known as a hydroponicum which grows fruits, flowers and herbs without soil. Open daily 10am-5pm (Suns6pm). £3.50/£1.50/family £8.50. Ladgate Lane, Acklam, Middlesborough (01642 594895).
West End world
London's first Regent Street Festival will see the road closed to traffic for the first time, making way for celebrity presenters, pop groups such as Steps, performances from West End musicals and a funfair. Sun, noon-8pm. Free. Regent Street, London W1 (020-7491 4429).
