Exposed-concrete stair pulls light and views into Porto home by Tsou Arquitectos

A concrete staircase and curved lightwell draw light and views into Casa Vertical, a tall, narrow home in Porto, Portugal, which has been designed by local practice Tsou Arquitectos.
In response to the home's thin triangular site, Tsou Arquitectos chose to connect the spaces of the dwelling vertically, giving the project its name.
The house is located in Porto, Portugal
Entering alongside a garage, a hallway opens into a central staircase that organizes the home, which was cast in exposed concre