the chicago board of trade building was built in 1929 and finished in 1930. it is at 141 w. jackson boulevard at the foot of the lasalle street canyon, in the chicago loop community area in cook county. it first became a chicago landmark in may 4, 1977. the building was made a national historic landmark on june 2, 1978. it was added to the national register of historic places on june 16, 1978.