Crazy Horse Monument is almost inconceivably big. This is a rendering of what the final sculpture is supposed to look like.
Here is the monument from a distance–you have to pay extra to get up close but we opted not to (I don’t even remember why–I think we were in a hurry). At any rate, to give you some idea how big this thing is there is a tiny tractor at the base of the sculpture, as you can see below.