Their choice of Nouvel was based on a particular fondness for his innovative work. Looking up from the city square, the observer sees no change in the building. Entering the bar during the day is a plunge into semi-darkness. An array of disorientating elements distortional mirrors, blurred images and a jumble of lighting effects produces a state of wooziness reminiscent of a drunken stupor. The structure has three levels, two of which are mezzanines.
Artificial lighting is supplied by strip lighting in light-box constructions attached to the walls.
Yellow, orange and red lights complemented by an occasional blue example enhance the colour scheme created by Alain Bony. Basing his choices on the concept of a beer palace , Bony looked to the foaming brew for inspiration and incorporated shades of gold, copper, rust, bronze and russet into the interior. A traditional wooden floor contrasts with lots of stainless steel, some of which is treated to resemble pewter and all of which is brightened by various yellow, mustard and orange furnishings. Shelves behind the bar extend to the ceiling. Beer pumps line the stainless-steel counter, which is augmented by a long table and benches.