Rafael Guastavino, Jr. designed and constructed the church's masonry dome using the Tile Arch System, a structural tiling system which was patented by his father Rafael Guastavino Sr. in 1885. Guastavino, Jr. went on to install masonry vaulting and domes in many Beaux-Art architectural works, such as the dome over the crossing of the Cathedral of St. John the Divine in New York (1911) and the ceiling of the Registry Hall at Ellis Island (1917). Lowell boasts several buildings with work by the Guastavino Company, including the entrance portico of Southwick Hall (1897) located on the North Campus of UMass-Lowell.
Grace Universalist sold the church to the St. George Hellenic Orthodox Society in 1973. St. George Parish had been formed in 1928, occupying the former Worthen Baptist Church from 1928 until a fire destroyed the building in 1973. Grace Universalist was renovated for Greek Orthodox use, including erecting an iconostasis and the addition of Orthodox iconography “written” by famed iconographer George Filippakis.
St. George Hellenic Orthodox Church Website