I don’t know if you’ve noticed this, but in the last decade, the number of cantilever buildings (exploiting air rights, mostly) seems to have exploded. This proposed building (for lower Manhattan) is particularly dramatic:

But uptown is not without cantilever buildings, even if the extra engineering costs rarely justify the design. Perhaps the best known local example is Graceline Court:

This residential building cantilevers over the masjid, or mosque, where El-Hajj Malik El-Shabazz – Malcolm X – once ministered.
The mosque was founded in 1946 at the Harlem YMCA as Temple Seven of the Nation of Islam, the mosque moved to the Lenox Casino at 102 West 116th Street in 1954 where Malcolm was named minister by Elijah Muhammad.
Malcolm X split from Elijah Muhammad in 1964, opening the Muslim Mosque at the Hotel Theresa.
Temple Seven (at 116/Lenox) was destroyed by a dynamite blast after Malcolm X’s assassination in 1965 but was rebuilt five years later with the dome and bright yellow window bays. It was renamed to honor Malcolm X, as was Lenox Avenue.”
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