Yesterday Sotheby's held the most lucrative London art auction ever – but were the artworks themselves record breakers?
Psychedelic mushrooms, robotic beds and a giant slide – is new Hayward show just a gimmick?
The Week is giving away tickets to a private tour of the art fair with antiques expert Haydn Williams
Banksy painted man's trailer home at Glastonbury in 1998 after busking with him on the streets of Bristol
Richard Prince attacked for selling Instagram users' images for $90,000, but it's not against the law
Bank of England asks public to choose artist for £20 note, but a woman is unlikely
Women of Algiers tops auction sales, as booming market boosts list of world's priciest art
The two portraits are expected to fetch at least £30m after going on display in London and New York
Formerly head of Italian and Spanish painting at the London gallery, Finaldi has been at the Prado since 2002
Memento mori, anti-capitalist statement or just bad art – five interpretations of the fourth plinth's horse skeleton
'On the internet, people only look at pictures of kittens', says Banksy as he highlights plight of Palestinians
From orang-utans and 'spirit bears' to a colony of king penguins on a South Atlantic Ocean island
'Fascinating' Ashmolean show focuses on the artistic brilliance of the paradoxical printmaker and poet
Loan of priceless river god Ilissos is likely to reignite long-running Elgin Marbles dispute between London and Athens
Saatchi Gallery show on the global influence of Pop Art is 'fun, noisy and downright nutty'
Irish artist Duncan Campbell wins with his powerful and complex film – but not all critics are convinced
'Innovative' photo show traces the brutal impact and lasting cost of war over 150 years
Wellcome's 'eye-popping' new show reveals the fascinating and risky history of sex studies