1. This Island in New Yorkhttps://www.google.co.in/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=0ahUKEwjv6PLUmczVAhULqo8KHemxC5YQjRwIBw&url=https%3A%2F%2Fviewing.nyc%2Fgentrification-in-bed-stuy-profile-of-u-thant-island-nycs-smallest-gourmet-food-hall-coming-to-washington-heights%2F&psig=AFQjCNFyXLbd3TVAJcnuGrI-RhThSmwSXw&ust=1502438393061564
Technically speaking, the city of New York by itself is one huge island. Manhattan is simply an island as well as there are others as well such as Governors Island, Liberty Island, as well as Staten Island and so on. Yet is this Island in New york city that no person is allowed to go to?
2. U Thant the tiniest islands in New Yorkhttps://en.wikipedia.org/wiki/U_Thant_Island
This is probably among the smallest islands in New York but is strictly off restrictions to the public.