For a fun and leisurely way to get an overview of OKC's historic Bricktown district, it's hard to beat a ride on the water taxi. The 40 minute narrated roundtrip excursion gives you glimpses of the highlights of Bricktown, the city's hub of entertainment.
If you go:
Tours depart daily about every 15 minutes. The official operating season is April through October, but these dates are often extended when the weather is warm enough.
Links:

115 East California Avenue
Oklahoma City, Oklahoma 73104 USA
Phone Numbers:
Water Taxi
+1 (405) 234-8263
+1 (405) 234-8263