Studio Gang's spiralling Mira tower tops out in San Francisco

These new photographs capture the twisted and fragmented exterior of US firm Studio Gang's 40-storey Mira tower, as it takes shape in San Francisco.
Photos released by Mira developer Tishman Speyer capture the 400-foot-high (122-metre-high) tower, which is formed from a series of vertical twisting columns.
Studio Gang's Mira Tower has topped out in San Francisco
In the images, the lower portion of the building is also fitted with the boxy windows that will eventually rise all the way up the