The best underground shows you will find will have free pbr and models as far as the eye can see. They are rarely announced, so keep your eyes out for promising openings, especially with Milk Underground coming up.
Having the experience of owning and running a coral reef aquarium (and frequenting this particular shop about once a week) - I was sad to hear it closed it's doors. Their reef display tank was always amazing. These pictures were taken from PetCo at Union Square (I also used to go there for my saltwater needs).
ANTHOM’s gallery-like store on Mercer Street is all about presentation, and their selection of pieces from designers like Lady Artigas, Mari Giudicelli, Yune Ho, Marni, and Suzanne Rae is displayed with an eye for design.