The Thompson Building has retained its place in Tulsa history while offering tenants state-of-the-art mechanical, electrical and safety systems, high-speed elevators and many other upgrades. The owner offices in the building and has made many improvements to the building since the purchase in 1992. The building HVAC system was recently computerized and the lighting is currently being upgraded to LED lighting. The building is located in the heart of the CBD Deco District at 5th & Boston and is within easy walking distance to City Hall, the Courthouse and numerous restaurants and hotels. Downtown Tulsa is an area of approximately 1.4 square miles surrounded by an inner-dispersal loop created by Interstate 244, Highway 64, and Highway 75.[1] The area serves as Tulsa's financial and business district, and is the focus of a large initiative to draw tourism, which includes plans to capitalize on the area's historic architecture. Much of Tulsa's convention space is located in downtown, such as the Tulsa Performing Arts Center and the Tulsa Convention Center, and the BOK Center. Prominent downtown sub-districts include the Blue Dome District, the Brady Arts district, and the Greenwood Historical District, Owen Park Historical Neighborhood, the site of ONEOK Field, a baseball stadium for the Tulsa Drillers.