The first concrete for the foundations was poured in November 2012. As the lower levels were completed, cranes installed a segregated railroad passenger car and a guard tower from the Louisiana State Penitentiary on November 17, 2013. These items were so large that they could not be dismantled and installed at a later date. Instead, the museum had to be built around them. By late December 2013, construction was just weeks from finishing the five basement levels, and above-ground work was scheduled to begin in late January 2014. At that time, the Smithsonian estimated the museum would be finished in November 2015.