Works by the gallery’s artists that once sold for a thousand dollars can now fetch over a million

Looking back at the history of the pioneering dealership in post-war art, plus a thought-provoking new installation in Madison Square Park and Caravaggio's The Martyrdom of Saint Ursula

The lives and work of Singaporean-British sculptor Kim Lim and the Chinese artist and poet Li Yuan-chia will be explored at the Hepworth Wakefield and Kettle’s Yard

Jacob Rothschild’s Waddesdon Manor wants to track down the massive mural created for the 1951 Festival of Britain

Plus, a Charles II-era silver-gilt vases, an avant-garde Cuban painting and a rare Tintin comic book cover

Survey at the Tel Aviv Museum of Art is one of the first outside the US to examine the artist’s life and work

Star lots include one of Picasso’s earliest paintings of his muse Marie-Thérèse Walter and a dynamic De Kooning

From street scenes to social media, this sweeping survey examines how documentary photography has made sense of the UK’s cultural and political climate

An exhibition at the Barbican Art Gallery explores the wealth of creativity that took place as Britain recovered from trauma and upheaval

Lesser known lots still hold plenty of hammer potential

Bucharest’s new Muzeul de Arta Recenta emphasises artists who worked outside the structures of the Communist regime

After a life of collaborating with commercial brands, Anni Albers' foundation has posthumously licensed a design to be used by the UK fashion designer

The amicus brief signed by more than 100 museums should shame the justices of the US Supreme Court

Show in Florence aims to bring "the complexity of the Italian art world” to an international audience

Flaky winning bids are knocking the gloss off record-breaking sales

The early self-portrait marks the moment the artist became a celebrity

Rumors of the death of painting have been greatly exaggerated

The artist’s show is a smart corrective to the standard narrative