The gray limestone walls facing Van Buren Street and inward facing stained-glass windows make the Humphrey Scottish Rite Masonic Center a bit forbidding to the surrounding downtown Milwaukee streets.
But new owners who plan to convert and expand the building into a 220-room hotel want to transform that longtime stand-offish structure into a hot spot for downtown residents and visitors, said Eric Nordeen, principal with Ascendant Holdings LLC. A tour through the inside, which is much more colorful…