Watercolor subject? It looks familiar ... so familiar a skyline ... in Mexico, probably?
This is from from my grandparents' home. The '30s date is a guess, as is the Mexican setting, although there are stereotypical Mexican dresses on the people. It's a watercolor signed by Polo Sorenana in bottom right; there is a straight line over the first n, so perhaps it's Soreñana. Also, the Polo could be Palo. I've looked on reverse Google images and searched for the artist. Any help appreciated.