The Herzog & de Meuron and Ai Weiwei collaboration – the 12th pavilion – breaks the mould of the sequence so far as the criterion for the commission had been for an architect not to have built in England. But Herzog & de Meuron are also deeply engaged in the art world, having built the Walker Art Centre in Minneapolis and the de Young Museum in San Francisco. They are currently working on art museums in New York, Miami and Kolkata. — ft.com

So who did Zumthor call upon to provide the garden, the green hortus at the centre of his conclusus? Piet Oudolf, of course, foremost exponent of the new perennials movement, a low-key Dutchman with the build of a rugby player who has practically cornered the market in high profile planting projects: the Lurie Garden at Chicago’s Millennium Park, New York’s Battery Park and the wildly popular High Line are among his best known works. — telegraph.co.uk

Peter Zumthor has unveiled his plans for a secret garden for this years Serpentine Pavilion. — Guardian