The third oldest Masonic Lodge in Tarrant County is the Mansfield Masonic Lodge No. 331. Formed in 1870, the group petitioned for formation from the Grand Lodge of Texas and began meeting downtown at what is now Main and Broad streets. In 1900, the original frame structure was replaced by a masonry structure. That building at 101 N. Main St. was declared a historical landmark in the late 1980s.