The first move was to cut a slot that would allow the tree to be seen from the inside. An opening framed in the floor beams located the original hearth, and was echoed by aligning a pair of VELUX skylights in the new roof above it. The central skylight then becomes the ghost of the original hearth, and makes a vertical connection between the sky and the ground.
The light brought in by the new skylights creates a dynamic interior space, a space that is constantly changing according to the movement of the sun. During the summer, the new glazing (including one of the skylights) opens up to provide ventilation, and in the winter, when the tree loses its leaves, the intake of daylight provides passive heating.