I am so excited I have finally found some time to work on my entry!
I have several visions for the final look. There is a chance I'll attempt to make more than one scene, but for now I sticked to one which is a nighttime sci-fi museum. It used to be a dig site, but it was transformed into an exhibition after a large and unusual pyramid-shaped artifact of unknown origin was uncovered.
Actually, it could also be just.. a courtyard with some kind of a contemporary statue or fountain in the middle. A place to relax, talk to people and stare at the marvelous monument. I'll probably come up with the right story as I progress with the design.
I don't plan to add any geometry or textures as it's not the point of this contest anyway. I may ultimately decide to modify some textures a little bit, but for now I don't feel I need to do it.