• For the exhibition itself : a single open space of 52 m length and 10 m width 4 m 50 height,
• No internal pilars nor walls.
• The open space MUST be darkened to full night, even in daytime.
• A lateral space of 10 m by 10 m for reception (pass sales and library) and a pedagogical space.

This is of course an ideal situation, but the exhibition is always adapted and rebuild with the local constraints.

• Please would be all the windows and light entries closed
• Floor should be darkened to avoid light reverberation.