Steps connecting the gradually rising floors of this Paris house by Moussafir Architectes can be glimpsed through the cut-out shutters on its glazed facade. Located in Paris’ 6th arrondissement, the house has been fitted into the three original stone walls of the site’s previous building. The steel structure comprises cantilevered floors supported by a central core that’s largely independent of the three outer walls. The south facade is entirely glazed and fitted with electrically operated steel shutters. With the exception of the bathroom, there are no partitions between the rooms. Wooden stairs wrap around the core of the house and each level leading off from the stairs becomes its own room. The central core, staircase, floors and ceilings are all clad in black locust wood. Concrete boxes have been fitted into the walls to provide built-in shelving.