. >> that was -- is that an hok stadium? >> it was an hok stadium designed out of kansas city. >> yeah. so we have this amazing design from here and this long tradition. and you're very emphatic in the book about how important that has been. in fact, i'm going to quote you. by happenstance, kansas city became, for all intents and purposes, the nation's center of sports architecture from the last quarter century of the 20th century onward. many of the architectural designs for sports facilities all over the world would emerge from this medium-sized midwestern city that otherwise had no claim as an architectural center. elaborate. how did this happen? >> it happened -- >> was this good? why did they get all that business? >> well, it kind of goes back to the arrowhead/kauffman complex. when that was originally done, it was -- the basic idea was done by an architect named charles deton, who came up with this notion of a rolling roof -- >> we talk about it all the time. >> -- that would sit between the two stadiums and could rol