With 53 floors above ground the Twin Towers reach an overall height of 240 m. Both towers are based on rectangular floor plans, with full height conservatories recessed into the centre of each. Within the conservatories sky lobbies span the height of eight floors each, allowing for spacious lobby and entrance situations on all floors. The design of the façade is based on the structural composition of the building: The concrete core within and the grid like shell outside are load bearing.