High atop a massive grain elevator in the middle of Minot, North Dakota, artist Guido van Helten swipes a concrete wall with ...

But stand behind it, your back to the river, and it’s something else: a 3-D painting hanging off a giant, rusted easel. “What you see,” Stella says, “is what you see.” Wow!

The canvases by the late Kazuo Shiraga, who spread paint with the bottoms of his feet while holding onto a rope above him to keep from falling, sold at Fergus McCaffrey ’s booth at the Foire ...