A few notable 21st century apartment buildings have brought an infusion of modernity to two historic Brooklyn neighborhoods.

Leafy, historic Brooklyn Heights symbolizes as much elegance and gentility as any of Manhattan’s most coveted residential enclaves. Tiny old-world boutiques, bistros and cafes line its commercial streets, and grand brick and brownstone-fronted townhouses and pre-war apartment buildings, restored to pristine perfection, are home to longtime residents; landmarked mansions on quiet cul-de-sacs enjoy open East River views. A relative newcomer with a Heights address has come to symbolize the side-by-side existence of newly-minted buildings and historic homes. One Brooklyn Bridge Park at 360 Furman Street sits at the edge of the Heights, with the neighborhood’s beloved amenities to one side and the river and greenery of Brooklyn Bridge Park on the other, signifying what some call the “new Brooklyn” and bringing residents seeking luxury condo residences across the river. In addition to parkside living and spectacular views, 450 loft-like apartments in the former shipping center come with world-class amenities like a 500-car garage, two landscaped terraces, a screening room, a fitness center and a children’s playroom. The building has the distinction of offering the borough’s most expensive home, an 11,000 square-foot penthouse featuring perks like a 3,500 bottle wine room and its own gym with a climbing wall, currently on the market for $32 million. Other available units include #621, a one-bedroom apartment with partial water views, listed at $935,000.

Situated just above Grand Army Plaza and north of Park Slope, Prospect Heights is another quiet, tree-lined neighborhood of grand historic brownstones and classic prewar co-ops. The area’s popularity as a coveted residential neighborhood has recently seen an unprecedented resurgence. Anchored by the bustle of trendy restaurants, shops and cafes on Vanderbilt Avenue, tree-shaded streets are home to townhouses that have passed the $3 million dollar mark. This prime location abuts some of the city’s top amenities like Prospect Park and Barclays Center.

Upon its completion in 2008, On Prospect Park at 1 Grand Army Plaza, a head-turning Richard Meier-designed glass-walled condominium, put the neighborhood in a spotlight usually reserved for downtown Manhattan. The 96-unit building’s apartments appear on the market only rarely, and when they do, they sell quickly. In addition to modern condo living and an unbeatable location, residents enjoy amenities like membership to a 30,000-square-foot health club with a private pool, on-site attended parking, a residents’ lounge and a rooftop sundeck. Also responsible for bringing new life to Prospect Heights is Newswalk at 535 Dean Street. The 173-unit condominium conversion’s innovative design stands out among the area’s low-rise industrial and residential buildings and its location, modern appearance and amenities (like a 14,000 square-foot landscaped roof deck with cooking and play areas and a fitness center) have attracted younger residents and those seeking a full-service condominium lifestyle. Currently available units include #223, a 1,176 square-foot one-bedroom loft with new kitchen finishes and plenty of closet space, listed at $899,000.