For years, there were two open-air markets in the Northeast. One of them was on Decker Boulevard near the intersection with Percival Road. I think it might have been at about the location of the current O-Bok Korean restaurant -- at any rate it was on that side of the road and near there.
The other was this one on Two Notch Road, across from what is now (but was not, I think, then) the IHOP. Both markets had lots of produce, but I always remember thinking that this one was a bit of an odder duck as it also had a component which was close to a convienience store. There was no front wall to the place, and if I recall correctly, the produce was under a simple shed-like structure, a tin roof supported by beams. The back part of the store however was a 3-sided concrete box. I seem to recall that they had A/C despite the fact that there was no door, and they sold groceries and sundries so you could get your produce out front and then get your bread and milk "inside". I didn't stop there often, but every time I did, I recall thinking how odd the place was.
I believe the market on Decker closed first, probably sometime in the late 80s. This one lasted quite a bit longer and never "closed" as such. Instead, sometime in the early 2000s, the whole place burned down and all that's left now is the concrete slab it was built on, some flower pots against the back fence, assorted junk (which may or may not be remains of the store) and the skeleton of their sign. It seems as though this would be a nice property, with easy acces from both Trenhom and Two Notch, and right across from Home Depot, but after 10 years or so the property remains vacant.
I think there's currently some kind of open-air market further out on Two Notch near Big Lots, but that appears to be based on awnings rather than a permanent structure.
Note: I originally dated this closing as "1990s". Commenter JP plausibly dates it to this millennium so I have changed the date.