I want to say 20 or so to get in? There is so much Bills related stuff and if you like nfl history, it’s just really interesting all around. The year that I went was the spring right after the eagles beat the pats in the SB. There is a “virtual SB experience” room where you sit in stadium seats and it shows you the game in very condensed version on this giant surround screen but it has all the highlights and the “stadium” rotates. Hard to describe but it was awesome.