Historic Lecompton constitutional hall located on lots 16, 17, 18 and 19 in block 20 of the city of Lecompton in Douglas county, Kansas, is hereby declared to possess unusual historical interest. Lecompton constitutional hall was the meeting place of the Kansas territorial legislature during 1856 and 1857, was the building in which the Lecompton constitution was written and voted on and has been designated a national landmark by the United States department of the interior.