Gaya Street opens on sunday. Go early to avoid the hot sun between 7:30 to 8:30 is the best time. Anything after that is awfully hot especially with jam packed people. They sell lots of things here from local craft, vegetables, beads to cats and dogs.
Plants and aquariums...not forgeting strange stuff like toad pouch and seashells as well as reflexlogy by the blind, music and some beggars.
When you see this fountain...you are almost at the end of gaya street. One more block then turn around and walk back. :)