This collection positions Lewis as an “anti-war war artist”

Tourism is causing a conservation nightmare

Until 18 April

Histories and anecdotes of the Tate Gallery and the British Museum

Stanford University works to create computer models of all of the master's sculptural works

£6.2 million goes to the new Tate at Bankside before next years opening.

Corrupt military officials in cahoots with Thai art dealers are hacking away at the temples

Recent developments in the restitution of looted artworks

The new series with The Art Newspaper

Founder of unauthorised casts sentenced to ten years

“Picasso and the War Years 1937-45”, Solomon R. Guggenheim Museum, New York, 5 February-9 May

“Andy Warhol: A Factory”, Kunsthalle at Karlplatz, Vienna, 5 February-2 May

Standing out from the crowd with art sponsorship becomes unnecessary, as more and more of America's biggest corporations unify

Research reassess the dingy mini-skirt usually seen on editions of the work. Does the answer lie in Nebraska?

Stancioff spent her life charting the use of the same visual symbols by vastly distant cultures

Lagoon barriers rejected by the Green minister of the environment

100 galleries make their yearly migration

Rosemarie Trockel, Andreas Gursky and Stephen Balkenhol all show new work

Works acquired in a “suspicious manner” will begin to be returned at once

An exhibition on the art in British country houses aims to show the public that these collections play a modern, vital role in the nation’s culture

Don't miss the Beuys next door

The exhibition notably shuns the Marlborough gallery, which represented the artist throughout his life

Two Constables and three small paintings discovered to be missing from storage

Impressionist painters on the Seine at Wildenstein, the Gilded Age glows at Vance Jordan, exoticism at Mark Murray plus fine furniture and Picasso’s lino cuts

“The Lady with the Ermine” arrives in the city as part of its Italian tour

Confounding the male gaze until 29 November

“My grandfather copied his own works”

A twenty -year restoration project has removed many layers of overpainting

A former keeper offers some practical suggestions

Christine Sitwell and Sarah Staniforth (eds), Studies in the history of painting restoration