The Louisiana State Building at the fair was a replica of the Cabildo in New Orleans, as it existed in 1803 at the time of the Louisiana Purchase. Thus, the St. Louis Cabildo lacked the familiar third story with its mansard roof and cupola, which were not added to the original building until 1849. Designed by architect William A. Freret, the faux Cabildo was constructed at a cost of $25,000 appropriated by the Louisiana Legislature. In front of the building was a replica of Jackson Square, complete with Andrew Jackson on his horse.

From Louisiana at Louisiana Purchase Exposition