The ornamental balcony grill is from an old building on Broadway. I can discern winged animals, birds and flower designs. Most probably this was made from cast metal and would have cost a lot of material and time.
This was a common trend then. These were replaced by fabricated steel grills of various designs.Since these were cheaper, they became very popular. Then the trend was towards simple straight verticals. Now, I notice that most new buildings have horizontal members on gates and balconies.
Guess what will be the next trend!