My first two Name That Site entries (1, 2) were pretty easy. I just wanted to get the ball rolling – let you see what it’s all about.
Now it gets tougher. I don’t think you’re gonna know this one right away. It ain’t a football stadium this time, but it’s still a building with critical ACC significance.
Anyone know what this is (click for larger view)?

As before, I’ll wait several days before revealing the answer.
Update: Time for clues!
Clue 1: This building is not in an Atlantic Coast Conference state.