Architecture of New York City high crime, prompting many to consider these projects a failure. A distinctive feature of residential (and many commercial) buildings in New York City is the presence of wooden roof-mounted water towers, which were required on all buildings higher than six stories by city ordinance in the 19th century because the municipal water pipes could not withstand the extraordinarily high pressure necessary to deliver water to the top stories of high-rise buildings. New York City is located on one of the world's largest natural harbors. The boroughs of Manhattan and Staten Island are their own islands, while Queens and Brooklyn are
Caribbean immigration to New York City community as "Loisaida"), Spanish Harlem and Williamsburg, Brooklyn since the 1950s. There are large Puerto Rican populations throughout the 5 boroughs, with the Bronx having the largest. Currently, Bushwick and several South Bronx neighborhoods, such as Soundview, have some of the largest numbers of Puerto Ricans in the city. However, there has been an increase in Puerto Ricans in outlying areas of the city, such as the North Shore of Staten Island, and the eastern Bronx. Caribbean immigration to New York City Caribbean immigration to New York City has been prevalent since the early 1900s. This immigration wave saw large