Buffalo's canyon of grain elevators is colossal. They are seemingly impenetrable. And there are a lot of them.

In their heyday, the silos stored millions of bushels of grain inside more than 30 grain elevators. Today, 15 still remain, though just a handful are used.

Now, an idea – and it's just that at the moment – is being floated to turn the cluster of six grain elevators known as Silo City into a national park. It would celebrate the cultural and economic importance of these concrete behemoths, and their invention in Buffalo in 1842 by Joseph Dart and Joseph Dunbar.

The area – also known as "Elevator Alley" – constitutes the densest collection of concrete grain elevators in the world.

"If you want to see great silos, this is one of the few places in the whole world to see them," said Adam Sokol, an architect with offices in Allentown and Los Angeles. He came up with the idea and has drawn conceptual site plans for "Buffalo Grain Elevator National Park."