Apparently manufacturing clouds inside interiors is now becoming a thing. Besides the work of Dutch artist Berndnaut Smilde, who engineers puffs of cloud inside Beaux Arts buildings and abandoned castles-turned-military-hospitals, there is Japanese studio Tetsuo Kondo Architects, which recently teamed up with the engineers at Transsolar to create a cloud inside a glass box over at the Museum of Contemporary Art Tokyo. This cloud, more a foggy marine layer type than the cottony cumulonimbus variety Smilde creates, is made by pumping three types of air into the box. On the bottom: cold, dry air; the middle: hot, wet air; and the top: hot, dry air. The layers create a cloud that bisects the box, and a single set of stairs allows visitors to climb through it.
From the architect:
· Cloudscapes at MOT by Tetsuo Kondo Architects and Transsolar [Dezeen]
· Genius Artist-Inventor Puts Actual Clouds Inside Great Halls [Curbed National]