An entertainment structure and apparatus principally comprising a 360-degree 2D and/or 3D cinematic theater. Seating for audience members is arrangeable on a circular motion base platform. A compound curved screen may lower from above to surround the theater upon a circular motion base platform, providing seamless media. A 2D/3D projection system is oriented within the structure to provide 2D/3D images on the screen through projection overlap for edge blending. A control system is used to rotate, pitch and roll the motion base platform. The control system can be synchronized with the media presentation. The structure includes a number of variations such as a variety of seating orientations, a stationary screen, a variety of screen configurations, and modular tracking seating.