Real estate and retirement

Astor began buying land in New York in 1799 and acquired sizable holdings along the waterfront. After the start of the 19th century, flush with China trade profits, he became more systematic, ambitious, and calculating by investing in New York real estate. In 1803, he bought a 70-acre farm that ran west of Broadway to the Hudson River between 42nd and 46th streets. That same year, and the following year, he bought considerable holdings from the disgraced Aaron Burr.^[15]
In the 1830s, Astor foresaw that the next big boom would be the build-up of New York, which would soon emerge as one of the world's greatest cities. Astor withdrew from the American Fur Company, as well as all his other ventures, and used the money to buy and develop large tracts of Manhattan real estate. Astor correctly predicted New York's rapid growth northward on Manhattan Island, and he purchased more and more land beyond the then-existing city limits. Astor rarely built on his land, but leased it to others for rent and their use. After retiring from his business, Astor spent the rest of his life as a patron of culture. He supported the ornithologist John James Audubon in his studies, art work, and travels, and the presidential campaign of Henry Clay.^[13]