OUT WITH THE OLD, IN WITH THE NEW

On the left there is the the streets of Harlem in 1978, on the right is the same place in 2015. you can see how the residential buildings have changed as a result of gentrification.
At East 61st Street, across the avenue from Central Park (see the reflections in both photos). Again, mostly private residences back in 1911.
116 West 131st Street, c. 1940 (left) and in 2018 (right).
Rendering of 1790-1792 Lexington Avenue between East 99th and 100th streets, a 13-story rental building has just topped off its structural frame and when finished later this year, will hold 95 rental apartments and retail space.
The corner of 125th Street and Malcolm X Boulevard in 1989 (left) and 2017