Find great value on Frontier Airlines flights from DEN to OKC when you book with CheapOair! Oklahoma is known for maintaining the fine balance between the old world charm and modernism. Known as the largest city and the capital of the U.S. state of Oklahoma, it is home to numerous travel worthy attractions. Art enthusiasts should take a trip down to the Oklahoma City Museum of Art. Situated in the Donald W. Reynolds Visual Arts Center, this museum showcases its original collection. It is also a home to a theater that shows foreign, independent, and classic films each week. Another interesting attraction to visit is the Oklahoma City National Memorial. This is a classic memorial that is made in the honor of rescuers, victims and survivors that were affected by the Oklahoma City bombing on April 19, 1995.