The smaller text on Medium means less scrolling per ten seconds, a plus. Very clean layout with Medium.
I think your alternating between single pics and collections flows really well.
I then paged through the article, focusing only the pics. The collection of the stonework on 1129 and the collection of the Courthouse popped the most for me. I read the accompanying descriptions and found them quite helpful if I was in Santa Barbara wanting to recreate your steps.