Always found [the iron gate](https://www.reddit.com/r/glasgow/comments/iu2w5b/comment/g5j0fhb) at Barrowland Park mildly interesting.
It's not anything to do with the flow of the Molendinar, but a relic of the old medieval / early modern street plan of the city, before the area around Glasgow Cross and Gallowgate was largely redrawn along a new grid plan in the 1860s-80s.