(MILWAUKEE, WI) -- The roof of Milwaukee’s iconic Bradley Center is no more. Sunday, crews imploded the roof as they continue with the demolition of the arena.

Onlookers gathered to watch a a part of Milwaukee history fall to the ground. For Mark Mattis, who helped build the Bradley Center back in the late 1980’s, it was a unique thing to witness

“Its awesome. I helped build it and now I get to see it pulled down.” Mattis says

Full demolition of the Bradley Center is expected to be completed by sometime this summer. ​