Why did the US pull out of the organisation? Plus: 9/11 and its impact on art at London’s Imperial War Museum. Produced in association with Bonhams, auctioneers since 1793

What will happen when the only painting in private hands by the Renaissance master heads to auction? Plus: the New Museum's big new show on gender, and our literary editor talks 18th-century princesses

As the art world descends on London, we take the pulse of the city's art scene with an art market specialist, a collector and two artists, Peter Blake and Ed Fornieles

The story behind Pacific Standard Time in Los Angeles; Ming Wong on the historic queer art show in Taipei. Plus: an exclusive audio work by Zardulu the Mythmaker

The lowdown on the new Thomas Heatherwick-designed museum in Cape Town. Plus: London's most enticing shows this autumn

Nazi-loot conference at London’s National Gallery. Plus: Rachel Whiteread on “mummifying the air” at Tate Britain

Listen to our podcast teaser

Its artistic director has made a point of showcasing lesser-known artists, and most impressive is the work by artists of African descent

The survey show in Germany takes place only once every ten years, which gives it a unique perspective, says its organiser

From the subterranean delights of East London to Sargent’s lesser-known paintings

Polish artist’s career took off in the Swiss city

Transgender empowerment among causes tackled at this year's fair

The German quinquennial shuns the market, but Art Basel dealers are still capitalising on the visibility it brings

Aboubakar Fofana’s project includes indigo-dyed sheep

Sculpture is redefined in the once-every-ten-year German festival

Exhibition in Angolan capital will feature artists of African descent who are participating in the German quinquennial

Artistic director Adam Szymczyk builds on highly-political themes of earlier opening in Athens

Nicolaus Schafhausen, Stefanie Rosenthal, Clara Kim and Katharine Stout on the good and the bad of the German quinquennial

The second part of the 14th edition of the show, in its familiar German home, will pick up on the themes explored in the Greek capital

Adam Szymczyk’s decision to open Documenta 14 in Athens is just the latest bold gesture from a curator unafraid of controversy and fêted by artists

As Greece’s state museums grapple with funding cuts and bureaucracy, independent spaces pick up the slack

The show has been criticised for neglecting the Greek artistic scene but praised for supporting state-run museums in the city

What to take in besides the big Documenta 14 show in the Greek capital

Move comes after court ruling allows right-wing government to create new Gdansk institution

Quinquennial contemporary art exhibition opens in a different city to Kassel for the first time

A smoking chimney billows for the start of the quinquennial event

Art lovers talk about the best and worst works they’ve bought

Prowl around with Adrian Wong's tiger before singing in a choir at Spring Workshop

Thomas Schütte and Jeremy Deller among artists from 19 countries to take part in the once-a-decade event