Ten to catch Apollo's selection for the month ahead

'Xi'an: Imperial Power in the Afterlife' at the Kunst- und Ausstellungshalle, Bonn, presents recent archeological discoveries from Xi'an, Shaanxi province. Left: a third-century head from the mausoleum of emperor Qin Shihuangdi (until 23 July). ( 49 02 28 9171 204)

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'Charles Sheeler' at the National Gallery, Washington, DC explores the artist's many facets, from his film Manhatta and his photographs (a car factory, left) to his paintings and murals. The exhibition (7 May-27 August) examines the modernist milieu in which Sheeler worked and includes work by Alfred Stieglitz and Paul Strand. ( 1 202 737 4215)

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Tate Modern, London, is rehanging its permanent collection on 23 May. 40% of the works have not been shown at the gallery before, including Roy Lichtenstein's Whaam! (right). ( 44 [0] 20 7887 8888)

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The Tribal and Textiles Arts Show is at the Seventh Regiment Armory, New York from 20 to 23 May. This shield (fight) from New Guinea is with J. Visser, Brussels. www.caskeylees.com

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The wall paintings in the Borgia Apartments at the Vatican by Pinturicchio (1454-1513) have just been restored. The project is one of several initiatives celebrating the 500th anniversary of the Vatican's art collection, which was begun in the 16th century by Pope Julius II. mv.vatican.va

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This study for The Spinner (left) is one of over 100 drawings in 'Dessins de Jean-Francois Millet' at the Musee d'Orsay, Paris (30 May-3 September). The exhibition emphasises the influence that Millet's drawings had on Degas, Seurat and other avant-garde artists. ( 33 [0] 1 40 49 48 14)

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Billionaire French industrialist Francois Pinault decided not to build a museum for his contemporary art collection in Paris because of insurmountable Bureaucracy--or perhaps it was just too expensive. He has instead installed it at Palazzo Grassi, Venice, which has been renovated by Tadao Ando. Among the works is this piece by Damien Hirst (right). www.palazzograssi.it

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The Portland Art Museum, Oregon, demonstrates that there is more to Italy than Rome and Florence with 'Great Painters in Brescia'. It ranges from Savoldo and Moretto (right, his portrait of an unknown man) in the 16th century to Giacomo Ceruti in the 18th (until 17 September). ( 1 503 226 2811)

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The International Fine Art Fair, New York runs from 12 to 17 May. The Eruption of Vesuvius (left) by Pierre Jacques Volaire (1729-1802) is with Didier Aaron, New York. www.haughton.com

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This Head of Diego (left) is one of the plaster casts made by Giacometti from his clay originals. 'Alberto Giacometti: Original Plaster Casts' (19 May-30 July) at the Kunsthaus Zurich is the first large exhibition of them since his death. ( 41 [0] 44 253 84 84)

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