The end of animal testing? Human-organs-on-chips win Design of the Year

They may look like humble little blocks, but these miracle devices could end animal testing, revolutionise the development of new drugs – and lead us into a world of entirely personalised medicine

Beach cafe, billionaire’s retreat, wedding marquee: second lives of the Serpentine pavilions

Everyone from Ai Weiwei and Frank Gehry to Zaha Hadid has designed a folly for the Serpentine gallery, but what happens to these starchitect baubles after their summer in the sun?

Rem Koolhaas crafts a spectacular ‘city of art’ for Prada in Milan

A new Roman Polanski film is being shown, Jeff Koons and Donald Judd artworks are strewn about, and Wes Anderson’s designed the kitsch cafe … in a scruffy industrial corner of Milan, Rem Koolhaas and Miuccia Prada have made a dazzling art space, so vast it’s practically a city. Oliver Wainwright is in awe

The future of luxury goods – from toxic waste urns to a compass that helps you get lost

A refreshing new exhibition at the V&A questions what luxury is and where it’s heading … and proves that £100k watches and fabulous fur hats count for nothing if you don’t have the ultimate luxury of time and space

Philharmonie de Paris: Jean Nouvel’s €390m spaceship crash-lands in France

Paris’s gargantuan new concert hall is two years late, cost three times what it should, and its architect even snubbed its opening … Oliver Wainwright tackles a tyrannical new mothership

Thomas Heatherwick plans $170m hovering miracle island for New York

The designer has dreamed up a Disneyfied island on stilts that boasts woodland, performance spaces and places to ‘wander and wonder’. But is this fairytale of urban planning too good to be true?