To ensure the basement floors at La Géode apartment building benefit from natural light there are pavement light wells as well as glass floors that admit light to the below ground spaces from the floors above. The riserless internal staircase echoes

To ensure the basement floors at La Géode apartment building benefit from natural light there are pavement light wells as well as glass floors that admit light to the below ground spaces from the floors above. The riserless internal staircase echoes the access stairs outside.