the main street commercial district is a historic district encompassing a typical downtown city block of little rock, arkansas, during the first half of the 20th century. the district consists of ten buildings lining the east side of the 300 block of main street. this area was completely redeveloped after a fire in february 1900 sparked an explosion at an arms company, levelling the block. the buildings in the district are stylistically diverse, and were built between 1900 and 1955.