Madrid museum’s great moderniser will return to former position at helm of Bilbao Fine Arts Museum<br> <br>

British architect's proposal beat those by Chipperfield and Koolhaas

Cheer yourself up after Kiefer's Walhalla with Turk's delights in Vauxhall

Collaboration between Russian and Italian museums marks "important moment in international relations" for ancient site

Musée Picasso in Paris plans to lend works to venues in Italy, Spain, France, Greece, Cyprus and Morocco from next year

Exhibition at Pinacoteca di Brera invites scholars and public to judge controversial attribution of Judith Beheading Holofernes

From a rare UK visit by Flaming June to the muted horrors of Paul Nash’s war paintings

Victorian picture, on show at Leighton House Museum, rarely travels from collection in Puerto Rico

The biennial festival is moving its dates from November to April

Museums across France are making quick use of cash injections

Fourth tremor in three months brings central Italy 'to its knees'

Arts Council Collection of nearly 8,000 works is planning 24 exhibitions with regional partner galleries

Disaster comes two months after 6.2-magnitude tremor destroyed town of Amatrice, killing 295 people

Vatican Museums will run tours of private apartments for first time

Exhibition of work by still-life pioneer Clara Peeters travels from her native Antwerp

The £21m art space is latest regional museum under threat after closure of art gallery in Edinburgh's Inverleith House

Sergei Shchukin’s holdings, split up by the Soviets, are reunited at the Fondation Louis Vuitton in Paris

La Stampa newspaper claims that looted artefacts are being trafficked in Calabria

Gallery of ancient funerary art restored with Italian support

Russian and French presidents were due to visit exhibition of Modern masterpieces from Shchukin collection

Fair security stopped the artist-activists as they handed out provocative stickers to visitors

Picasso’s portraits, AbEx’s big guns and Parreno’s Turbine Hall commission are not to be missed during Frieze week&nbsp; <br>

There’s no Trump-style wall at Frieze to divide artists from across the continent

Artist’s keen eye and sharp wit are explored in major exhibition of portraits

The “feminist masked avengers” are targeting private museums in their continuing fight for greater diversity in cultural institutions

The minister of culture, Audrey Azoulay, said she understands the “difficulties” museums face in the wake of terror attacks

Feminist US collective is in London this week at the Whitechapel Gallery, Tate Modern—and Frieze too

Our pick of the city's must-see exhibitions, including Picasso, Pollock and two million pennies<br>