Art market faces uncertain 2017 after falling values and high-profile disputes

A drop in volume, court battles and authenticity issues dogged 2016 and no one is sure if the new presidency will be good or bad for business

Ai Weiwei major retrospective. Libero at Palazzo Strozzi in Florence

Palazzo Strozzi in Florence presents Italy’s first major retrospective dedicated to one of the world’s most celebrated and influential contemporary artists, Ai Weiwei. A dissident artist with a leading voice, Ai Weiwei has become a leading voice on the international art scene and China’s most famous living artist. Known for his political activism and meticulous … Read more

Art Basel Miami: how the art fair landscape reflects Trump’s America

The current US climate has led to a racially charged and overtly political range of artworks on display at this year’s show

Laura Cumming: best art of 2016

Portraits woke up, the tiny Goldfinch flew in, the Switch House switched on, and junk art triumphed

• Observer critics’ reviews of the year in full

Robert Rauschenberg review – six sensational decades of work finally reveal the man in full

Tate Modern, London
Driven by an insatiable curiosity, the groundbreaking artist took the triumphs and wreckage of American life and turned them into art – and this brilliant show captures his extraordinary range