Designed by James E. R. Carpenter, who was renowned in the 1900s for being the architect behind many of the city's luxury high rises, 812 Park Avenue originally sold 15-room triplexes and 13-room duplexes. Today, it is mostly made up of duplexes, one of which recently sold for $7.2 million.
610 Park Avenue, a 15-story condo building, is part of the Trump Organization's real estate portfolio. Converted in 1998 from a hotel into condos, the building dates back to 1925.
When 930 Park Avenue was first converted into a co-op in 1946, the 14-story building had an assessed value of just $685,000. According to recent property data, it's now valued at more than $14.5 million.