The BOK Center is located in Tulsa, Oklahoma and was constructed in August of 2005. This building serves as a multi-purpose arena that hosts concerts and various sporting events. The capacity for the BOK Center exceeds 19,000 seats. My encounter with this building occurred a couple of years ago when I came here to see Ed Sheeran in concert. Thousands of people were present that created an exciting atmosphere to be in. I was extremely impressed with the design of the building, it is unlike any other that I have ever encountered. The outside of the building is what makes it the most unique, as it is not just your standard circular arena, but instead the architect incorporated many twists and modern features.