I've recently went to see the OKC Thunder game and I was inspired to make a huge and realistic basketball stadium.
I plan on making it 3 floors with full with restaurants, bars, arcades, bathrooms, and more. The pictures you've seen is just the start of an entrance. It's gonna take a while so I can make it be the best as possible. The designs will be similar to those of the Chesapeake Energy Arena in Oklahoma City. Credit goes to them.