From Llandudno to Stromness: 10 of the best hidden gem art galleries

A selection of the best art off the beaten track, featuring skeletal effigies, glowing landscapes and Victorian polymaths

‘This is the Everest of zero carbon’ – inside York’s green home revolution

The city plans to build Britain’s biggest zero-carbon housing project, boasting 600 homes in car-free cycling paradises full of fruit trees and allotments. When will the rest of the UK catch up?

‘Courage, elegance, grit’: architect David Adjaye makes history by winning RIBA award

For the first time in its 173-year history, RIBA awards its gold medal to a black architect – and his best, and strangest, work may be yet to come

The museum of everything: do you have time to look at 150,000 exhibits?

In a world first, Rotterdam’s Boijmans museum has put its entire collection on display in a mammoth new warehouse. As the V&A considers a similar experiment, is this ‘open storage’ model the future?

When does street art become ‘art’ art?

Whether you think graffiti is a subversive, democratic art form or a public nuisance, it harks back to our cave-painting days

‘True beauty for the ages’: $80m Botticelli to appear at auction

Sotheby’s says estimate for 550-year-old painting is largest it has ever set for an old master