 Downtown Tulsa is an area of approximately 1 @.@ 4 square miles ( 3 @.@ 6 km2 ) surrounded by an inner @-@ dispersal loop created by Interstate 244 , Highway 64 , and Highway 75 . 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 , the Tulsa Convention Center , and the BOK Center . Prominent downtown sub @-@ districts include the Blue Dome District , the Brady Arts district , the " Oil Capital Historic District " , the Greenwood Historical District , Owen Park Historical Neighborhood , and the site of ONEOK Field , a baseball stadium for the Tulsa Drillers opened in 2010 . 
