This is the Agora and bridge from the City of Arts and Science in Valencia, Spain by architect Santiago Calatrava.
The Agora is a tennis arena. It has the tennis court with seating on the inside (See photos).
The blades are included on top, which appear in concept art but I don't think they are on the finished arena in real life.
They are rigged and animate. (There is a null titled "Rotate This" to open and close them manually)
In C4D, they are animated in a timeline.
Includes textures and materials.
STL (Stereolithography, filesize: 24.8 MB), OBJ (OBJ, filesize: 26.8 MB), 3DM (Rhinoceros 3D, filesize: 21.2 MB), OTHER (Other, filesize: 39.4 MB), MAX (Autodesk 3ds Max, filesize: 16 MB), 3DS (3D Studio, filesize: 16 MB), DXF (DXF, filesize: 21.1 MB), C4D (Cinema 4D, filesize: 4.87 MB), FBX (Autodesk FBX, filesize: 39.2 MB), DAE (Collada, filesize: 19 MB)