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
Demographics of New York City settled along Ocean Parkway in Brooklyn creating a unified community consisting of about 75,000 people in this area, while the other Sephardic Jews live in the Upper East Side of Manhattan and in Staten Island. 19th-century Jewish immigrants settled mainly in the tenement houses of the Lower East Side of Manhattan. New York City's current Jewish population is dispersed among all the boroughs; Brooklyn's Jewish population in 2011 was estimated as 561,000, and Manhattan's was 240,000. The Orthodox community is rapidly growing due to higher birthrates among Orthodox (especially Hasidic) Jews, while the numbers of Conservative and Reform Jews are