Carlo Ratti unveils digital arts centre with zigzag orange staircase

Italian architect Carlo Ratti has revealed his design for MEET, Milan's centre for digital culture and creative technology, which centres around a colourful zigzag-shaped staircase.
MEET is located in a historic palazzo in the Porta Venezia neighbourhood in Milan, to which Ratti added a 15-metre-high stairwell.
Ratti's design was informed by an earlier renovation of the space carried out by Milanese designer Gae Aulenti at the end of the 20th century.
Top and above: the stairwell at the centre o