From a distance, the ornamental  feature up by the roof-line drew our attention. I zoomed in with my trusty digital zoom lens to get a closer look at what turned out to be an old-fashioned  baby-cherub. We then went on to have a better look at 355 Riverside Drive (at 108th St). Chatting up the super who was talking with a friend outside, he told us that the building was designed by Carnegie Hall architect, William Tuthill.  The ornamental details are theatrical: satyr, vase, satyr, vase. But it’s the brickwork that does the decorative heavy-lifting.  Especially catching are the lines of the protruding brick horizontal courses closer to street-level. I think the bond-pattern is Flemish, each row or course alternating with a long rectangular stretcher and small square header brick. The abstraction of the brickwork holds the figural ornament in place. All I could find of interest online was that and that it was built in 1925.