Museum of Modern Art (01865 01865 722733/813830): Tues-Sun 11am-6pm, Thurs 11-9, until Oct 8, Enclosed and Enchanted, ten contemporary artists explore various forms of landscape architecture; in the caf, Joanna Usherwood: Surface Tension paintings probing the 'nature' of art, science and industry. Wednesday lunchtime tours throughout September, noon.

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Ashmolean Museum (01865 278015: Tues-Sat, 10-5, Sun 2-5. Exhibitions: until Sept 10, British Townscapes. Gallery talks: Fridays and Tuesdays at 1.15pm. Ashmolean Treasures tour every Saturday 11am. Highlighted object of the month: Greek amphora showing Olympic sports, gallery 33, Ancient Greece, first floor. public lecture: Sept 19 at 5pm, A Cretan Bronze Age Palace Decoded: Arthur Evans and the Frescoes of Knossos by Gerald Cadogan (in Taylorian Lecture Theatre). Special tours: can be arranged for private adult groups, tel for further information. To book a place on gallery talks, activities and tours tel 01865 278015. ______________________

Oxford University Museum of Natural History (01865 272950): open daily noon-5pm. Until December, Ruskin and the Oxford University Museum: Ruskin. New permanent dinosaur and dodo exhibition.

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Pitt Rivers Museum, Parks Road (01865 270927): open noon-5pm, daily. Until Sept 2001, Transformations: The Art of Recycling. Also the Joachim Schmid Collection at the Pitt Rivers Museum, an artist's intervention and site-specific installation. Until autumn, Collectomania! Coke cans to twizzle sticks.

Christ Church Picture Gallery (01865 276172): Mon-Sat 10.30-1, 2-4.30, Sun 2-4.30. Until Nov 15, Images of Women Old Master drawings including works by Ribera, Ferderico Zucaro, Abrham Bloemaert and Elisabetta Sirani. Admission free on Mondays.

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Oxford Gallery, 23 High Street: 10-5 Mon to Sat, until Sept 6, Glass Houses a survey of glass relationships.

Ark-T Centre and Gallery, Crowell Road, Cowley (01865 773499/396778): until Sept 30, Within the Sanctuary paintings and prints by Rachel Edwards-Grundy and Sharon Wyper. ______________________

The Theatre, Chipping Norton: until Sept 17, Elemental Judith Yarrow's paintings and prints inspired by landscape, by Judith Yarrow.

West Ox Arts Gallery, Bampton: Sept 9-24, Tues to Sat 10.30am-12.30pm, 2-4pm, Annual Members Exhibition.

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Corner House, Charlbury: 10-5, Sat and Sun only, photographs of old Charlbury. For Charlbury Street Fair and Museum Extension Appeal.

Witney and District Museum (01993 775915): until Sept 17, The Boys Brigade Exhibition.

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Oxfordshire Museum, Fletchers House, Woodstock: until Sept 10, About Time. In association with the Ashmolean Museum an exhibition for the new millennium.

Vale and Downland Museum, Wantage (01235 771447): Tues-Sat 10-4.30, Sun 2.30-5, ongoing, Heritage of the Vale of the White Horse. Until Sept 10, Gus Mills' watercolours of local scenes and views of the Lake District, Shropshire and the south west. ______________________

Milton Keynes Gallery (011908 676900): until Oct 8, Alison Turnbull shows Houses into Flats 28 paintings investigating the ways in which we transform the spaces we inhabit; new work by Layla Curtis making use of sea, road and various world topographical maps, collaged into intriguing hybrid pieces; specially commissioned wall drawing by Richard Wright for the distinctive Cube Gallery. Although separate, the exhibitions have a loose architectural and urban connection. Telephone the gallery for details of guided tours and other events during this exhibition.

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Henley River and Rowing Museum: Sat 1.30pm, Looking for Alice on the Thames, a talk by Mavis Batey. To book a place telephone 01491 415607/5.

Cheltenham Art Gallery and Museum: until Sept 23, Hidden by Hedges... Change in the Cotswold Landscape. ______________________

Bohun Gallery, Henley-on-Thames: Mon-Sat 9.30-1.15, 2.15-5.30, Sept 11 to Oct 3, new paintings by Hsiao-Mei Lin and Mary Malenoir; Geoffrey Eastop handbuilt ceramics.

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New Greenham Arts Gallery, Newbury (01635 38105): until Sept 22, Dr Jon Pengelly's Work in Progress, derived from his years working on an American military base during the Cold War years.