A pre-war luxury condominium conversion in Chelsea, 422W20 -- aptly named for its location at 422 West 20th Street -- offers opulent apartments for sale. Formerly a dormitory for married General Theological Seminary students constructed in 1895, this NYC condo offers the best of both worlds to its residents: the classic look of Manhattan architecture complementing freshly renovated, modern apartments that characterize living in one of Manhattan’s hippest neighborhoods.

737 Park Avenue is a pre-war high-rise in the Lenox Hill section of Manhattan’s Upper East Side which will soon be home to newly renovated luxury condominiums. Built in 1940 by Slyvian Bien, this 19-story red-brick building has long held a reputation for being one of the most prestigious rental addresses on the Upper East Side. Harry Macklowe purchased 737 Park Avenue last year and is currently converting the 108 luxury rental apartments into condominiums, and these new units will feature high-end fixtures and features once completed.

The Upper West Side is home to some of the most luxurious condos in Manhattan, but prewar conversions are rare, which makes 240 West End in Lincoln Square Avenue a bit of a special building. Originally built in 1924, 240 West End Avenue was converted from a rental building into a luxury Manhattan condo building in 2009, which means it comes with both prewar style and highly modern comforts and conveniences. This building is sixteen floors high, with 54 condos for sale that range in size from one-bedroom to five-bedroom suites.

The Apple Bank Building on 2112 Broadway in the Upper West Side is a particularly unique luxury Manhattan condo conversion. The 8-story building was initially constructed in 1928 for the Central Savings Bank. The bank takes up the first four stories, while the top four consisted of offices until 2006, when the bank realized the untapped potential in converting those offices into residences.