Welcome to New Castle Indiana, home of the Chrysler High School Trojans and the "Field House", the worlds largest high school gym which seats 9,235 but has, in the past held 10,000 for basketball games. It's an amazingly large building. The level I took the photo on is at ground level and the basketball floor is underground. It was finished in 1961 but continually upgraded since to keep it as modern as possible. It's a fun place to see a basketball game though.
Odd, the floor does not have permanent markings for volleyball, it appears they use tape now. They used to use a paint they could just mop up after each game. Each year they host volleyball sectionals, wrestling sectional and basketball sectional.
Three of the other biggest gyms are a quick drive from New Castle, one in Anderson known as the Wigwam, and then the one in Connersville which a smaller version of the NC Field House that seats right around 7,000.
This photo is not the best, I was in a hurry and didn't clean it up any.
JS