this is cast concrete, so it's an enormous object. >> pelley: from monumental to miniscule, carlos bustamante is the project manager building a place for 33,000 moments in time. >> bustamante: so when you had the railcar, the railcar pieces the guard tower, and all the support equipment, we had a convoy of about 12 semi-trucks traveling down the road across six states to get here. and it took them about three days. >> pelley: how do you get those things into this building? >> bustamante: so we set up two very, very large cranes. and these cranes are... are rare, there's not a lot of them this size. and we picked up these two objects, and basically brought them over the site and lowered them down about 60 feet below grade. >> pelley: the answer is, you don't move these objects into the building, you put these objects in place and you build the building around them? >> bustamante: exactly. there's no other way. >> gardullo: oftentimes, what i'm drawn to are some of the smaller things-- shards of glass that were picked up after the bombing of the 16th street baptist church in birmingham alabama.