10 of the best European cities for art nouveau

Art nouveau swept across Europe around the turn of the 20th century and was embraced by architects, graphic and interior designers and artists. Here are the best cities in Europe to get a flavour of its most impressive buildings

Ed Ruscha on Marcel Duchamp: ‘He was a guiding light’

When conceptual art’s godfather finally had a retrospective, it was in California – where a group of young artists welcomed him to a game of naked chess

World art market stalls for first time in years

Fall of 7% a function of slowing at cheaper end of market with record prices at top end continuing to make headlines