I've already mentioned the Concrete Central Elevator, which still stands and probably remains accessible at ground level, but no higher (the stairs having been removed?).
There is a lot to see at the ground level, that is, in the "basement"of this colossal grain elevator (built between 1915 and 1917 and capable of storing 4.5 million bushels).
There is the magnificent hall-like effect created by the huge amount of space that exists underneath the reinforced-concrete structure that holds the iron hoppers and spouts that are attached to the bottoms of the grain bins. (Note that some spouts are coming down from interstitial bins, which do not require hoppers.)
A photo that documents just one of many such hoppers at the Concrete Central.
The only way Orrin and I managed to obtain this view of the three rusted-out, formerly mobile marines towers at the Concrete Central was to climb the stairs all the way to top of its neighbor on the Buffalo River, the Superior Elevator, where the degree of deterioration was just as bad.
(All photos on this page taken by Orrin Pava.)