Gabriel Architects takes the approach that great architecture is more than just a space. Great architecture inspires. We agree 100% and have always found inspiration working with this firm over the past six years. Their work in and around Houston includes such acclaimed new spaces as The George Theater for A.D. Players and at the other end of the spectrum, the restoration and adaptive reuse of the historic 509 Main Street building in downtown Houston. Firm founder John Gabriel began his career over 35 years ago working at renowned Houston firms 3D/International and Morris Architects before opening his own firm in 1991.