Walk with us on the Hoover Mason Trestle in Bethlehem, Pennsylvania. The HMT allows you to get up close and personal with the Blast Furnaces at the ArtsQuest Center at SteelStacks. www.LehighValleywithLove.com Hoover Mason Trestle : Lehigh Valley with Love Tunes at Twilight in Bethlehem : Lehigh Valley with Love