The best things in life are free! Here is a list of 12 New York attractions and museums during the weekend that are absolutely free.

Saturdays :

1.The Brooklyn Botanic Garden (from 10am until noon) 
2.The Jewish Museum 
3. New York Botanical Garden (from 9am to 10am) 
4. Solomon R. Guggenheim Museum (pay whatever you like during 17h45 à 19h45) 
5. Wave Hill (from 9am until noon) 

The first Saturday of every month:

6. Brooklyn Museum (from 5pm until 11pm) 

The third Saturday of the month:

7. El Museo del Barrio 

Sundays:

8. Frick Collectionwww.frick.org  (Pay whatever you like from 11am until 1pm) 
9. The Morgan Library and Museum (McKim Rooms only from 4pm until 6pm) 
10. New York Hall of Science (from 10am until 11am) 
11.Queens Botanical Garden (from April until October from 4pm until 6pm) 
12. Studio Museum in Harlem