Someone, either the city of Collinsville or IDOT constructed a huge brick all with undulating curves across the south east corner of Clay and Vandalia behind which is the Catholic church and school parking lot. We rather liked the look of it until recently when they added iron gate-like arches across the top and other things. Now it looks a bit too busy.
It's amusing to read the names this wall is being called nowadays. The Great Wall of Collinsville and the Monument to Bert's Chuckwagon. Bert's of course was the iconic A framed place to get tacos and other fun food which sat at that spot for years.
I found this picture of Bert's on Google and it was taken by the owner at some point in its history.
Haven't had a chance to get a picture of the big wall as yet, but one of these days...