These are my drawings:
And a few of the renderings:
The walls are curving cast in place concrete that radiate from a central point - the theater. To the left is an outdoor auditorium that adjoins a park. The entrance is the opening to the right.
This is a view of the entrance. There are small openings where the ceiling touches the wall to provide a light wash on the rough concrete walls.
This was all modeled in Rhino and rendered with the Maxwell Rendering plug-in for Rhino.