Rendering of proposed multipurpose facility — Michael McCoy, the Oklahoma-based architect on the project, said the Monolithic Dome’s energy efficiency and strength both were key factors in the Muscogee (Creek) Nation’s decision to go with dome construction.

Rendering of proposed multipurpose facility — Michael McCoy, the Oklahoma-based architect on the project, said the Monolithic Dome’s energy efficiency and strength both were key factors in the Muscogee (Creek) Nation’s decision to go with dome construction. (Michael McCoy)