Exhibition of the week Tony Cragg Wobbly cosmic abstract forms materialise around one of Britain’s most spectacular stately homes. Castle Howard, North Yorkshire, until 22 September Also showing Emma Stibbon: Melting Ice | Rising Tides A personal project to observe the climate crisis, from the Arctic to British coasts, in drawing and photography. Towner Eastbourne, 9 May-15 September Ranjit Singh: Sikh, Warrior, King Art, weapons and armour bring to life Ranjit Singh, “Lion of the Punjab”, who established the Sikh empire in the early 1800s. Wallace Collection, London, until 20 October Paul Maheke: To Be Blindly Hopeful Immersive installation that includes X-ray like spectral images of selfhood. Mostyn, Llandudno, until 29 June Simon Starling Houseboat for Ho is Starling’s design for housing in a Danish community threatened with inundation by the sea. Modern Institute, Glasgow, until 25 May Image of the week Look familiar? You may recognise Yan Wang Preston’s delightfully subversive He from Manet’s Olympia. The UK-based Chinese photographer’s reworkings of famous artists’ works are clever, concise reversals that reveal the original’s assumptions and exclusions: rewriting art history, one liberated pair of buttocks at a time. What we learned The UK’s National Crime Agency is selling a Frank Auerbach painting for seven figures Liberty shines brighter in France, after Delacroix’s iconic painting is restored Miami is driving a craze for car-chitecture Still life is more subversive than you think Dean Sameshima celebrates the art of the sexual outlaw Peggy Guggenheim’s granddaughter has revealed a little-known chapter of the storied art collector’s life Diana Matar’s latest photography series documents US deaths at the hands of police Iranian artist – and Paralympian – Mohammad Barrangi explores disability and migration Old pianos become art works in Bath Grim relics of Hamas’s 7 October attack on Israel have gone on show in New York Britain’s museum of the year contenders were announced Colonial imagery at the RIBA’s headquarters has been challenged by global artists Masterpiece of the week The Virgin and Child by Masaccio, 1426 This painting does not immediately look revolutionary to modern eyes. Yet when it was done 600 years ago it was challenging not only artistic traditions but human cognition itself. Look at the Virgin Mary’s throne and you can see it is pictured in deep, realistic perspective. This illusion of three-dimensional space on a flat painted panel was a scientific wonder in the early 1400s. Masaccio reveals the solidity and roundedness of physical existence with a precision artists before him had barely attempted. Once you see the perspective of the throne you can also see how full and lifelike the faces are. Yet it is a stern, severe work. Masaccio has a moral edge. Why does the Virgin’s throne resemble an ancient Roman building? When this was painted, Masaccio’s city state Florence was gripped by the ideal of reviving the civic virtue of the Roman republic. This masterpiece is not just religious but political. National Gallery, London Don’t forget To follow us on X (Twitter): @GdnArtandDesign. Sign up to the Art Weekly newsletter If you don’t already receive our regular roundup of art and design news via email, please sign up here. Get in Touch If you have any questions or comments about any of our newsletters please email newsletters@theguardian.com