Old Main St., Morrisburg by Mike Kelly, Iroquois, ON, 2001 Upper Canada Playhouse This scene of the south side of Morrisburg’s Old Main St. (Kings Highway #2) in 1910 illustrates the commercial shops, and services, including the famous Music Hall. All of this was lost to the construction of the St. Lawrence Seaway. To the east of this mural the opposite side of the same section of Main St. is illustrated, as it appeared at a later time period.