Art Market Report: As Fridamania grips London, female Surrealists’ market surges

Two big survey exhibitions and a fresh swell of 1990s nostalgia are putting the so-called ‘forgotten generation’ back in the spotlight

The modern romantic’s latest take on contemporary ruins weds California’s urban no-go zones to European high culture and decline

In the decades after its mines closed, western Germany's Ruhr Valley quietly reinvented itself through culture. The 16th edition of Manifesta, the nomadic European biennale, asks what the region might yet become