Henson Efron has new digs in Capella Tower Minneapolis law firm Henson Efron designed its new Capella Tower office to embrace a new way of work. Capella Tower is a 58-story certified LEED Gold building in the center of downtown Minneapolis that was built in 1992. The building’s distinctive crown is an icon on the Minneapolis skyline. The new office supports how the nature of work has evolved over the past year and incorporates flexibility that will continue into the future, Henson Efron says. The 45-year-old firm will occupy 15% less space than their previous footprint at U.S. Bank Plaza.