When it comes to historic Brooklyn brownstones, most of them look pretty similar: a beautiful, high-ceilinged parlor floor, moldings, fireplaces, some woodwork and backyards. Over the years, owners have obviously updated the kitchens, but usually it’s a run-of-the-mill open kitchen located in the back of the parlor floor. Not so at this brownstone in Fort Greene, at 30 South Portland Avenue. This property is pretty much the creme de la creme of Brooklyn real estate: a well-preserved, spacious brownstone on one of the prettiest blocks of one of the most in-demand neighborhoods. (That is why it’s on the market for a whopping $5.25 million.) It also comes with a surprise: a retro kitchen that looks like it’s straight out of a 1950s diner!