Rowan Moore in The Guardian on this summer's Serpentine Pavilion in London by HdM and Weiwei. (Skip-scroll through the intro about how tiresome Thomas Heatherwick is).
"What you get now is a sunken bowl lined with series of descending terraces, with fragments of curved and angled lines that echo the bygone works of Sanaa, Gehry, Hadid, Libeskind, Eliasson and others. It's surfaced with dark brown compressed cork which looks like mud from a distance and is firm but slightly yielding underfoot. It also gives off an organic scent. Above is a horizontal disc, propped on a basic structure like the covering of an archaeological dig, holding a film of water."
"The surrounding land slopes, which means that at different places you can see over the top of the disc and appreciate the reflections it makes of trees and sky, or look into the cave-like space it covers, with fragmentary views of the park beyond. The interior ... is an events space, cafe and place for sitting around, except that this time it was felt that the concept would be compromised by installing catering facilities. These are provided by a matter-of-fact trailer parked close by."
Photo from the article