Here a few informations about the free museums.
American museum of national history - last hour of the day for free
Museum of modern art - Friday 4-8 pm
Metropolitan Museum if art
9/11 memorial museum - Thursday 5 pm ( online registration needed )
The cloisters
New gallery - first Friday of the month 6-8 pm
Brooklyn Museum - first Saturday of the month
New York botanical garden - Wednesday free and Saturday 9-10 am
New York historical society pay what you want
Brooklyn zoo - Wednesday free
New York aquarium - Friday 3-3:30 pm in spring/autumn/winter and 4-5 pm in summer
