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

From leggings to baubles, enterprises offer artists a new canvas

Businesses are finding opportunities to work with top galleries – and nurturing novel forms of creative collaboration

Modernist photos from Elton John’s private collection go on display

Tate Modern’s Radical Eye exhibition features 200 of 8,000 works collected by singer since he quit drinking 26 years ago

Tate Britain project uses AI to pair contemporary photos with paintings

IK prize-winning system matches images from the 24/7 news cycle with centuries-old artworks and presents them online

First look: inside the Switch House – Tate Modern’s power pyramid

With its chainmail brickwork, vast spaces and panoramic views, the Tate’s £260m ziggurat is a mesmerising twist on the existing art gallery