Located in the basement of the '32 Hoche' building, the auditorium can seat up to 300 people. It is the venue for a wide variety of events such as in-house conventions, presentations of the Group’s results, or conferences.

The 450-square metre garden illustrates the desire to take biodiversity into account. It can be seen from the street. A beehive and a composter have been installed, alongside a ‘living wall’ and Japanese karesansui dry landscaping. Alternative methods such as releasing ladybirds are used to curtail the use of gardening products.

Behind the reception desk in the lobby can be seen a curved glass staircase made up of two vertical panels of triple-laminated glass whose inner sheet supports the treads. A load of one tonne has been placed on the stairs to test the strength of this exceptional structure. The lobby also features a 'sail', a 20-metre-high curved glass wall.

The staff restaurant seats 80 people. The see-through kitchen, bar, full service, garden outlook and plasma screens confer a warm and friendly atmosphere.