This incredible SoHo Duplex penthouse defines modern minimalism in a historic cast-iron loft building, featuring three bedrooms and three outstanding terraces for an ideal indoor-outdoor lifestyle in the heart of downtown.

Arrive via key-locked elevator to the home's top-floor living spaces, flooded with natural light thanks to eastern and western terraces, one with an outdoor fireplace. NanaWall doors open both sides of the level completely to capture gentle breezes and create a truly seamless indoor/outdoor living experience. The spacious great room offers generous living and dining areas featuring blonde wide-plank hardwood floors and sky-high ceilings.

The adjacent, open Varenna kitchen epitomizes chic simplicity and functionality, with its Calacatta Gold marble countertops, wide island and premium appliances, including a 36-inch Sub-Zero refrigerator and a fully vented gas range, wine refrigerator, speed oven and built-in espresso machine by Miele. An open glass-and-wood staircase leads up to the spectacular roof deck featuring a complete outdoor kitchen and wide-open city views. With a combined 1,300 square feet of private outdoor space, this home truly is exceptional when it comes to outdoor destinations.

Three luxurious bedroom suites reside on the penthouse's lower level. The serene owner's suite boasts a fireplace, reach-in and walk-in closets, and a white-on-white en suite bathroom where heated marble floors and timeless subway tile surround a Waterworks soaking tub and steam shower, and a double vanity with Lefroy Brooks fixtures. Two more bedroom suites flank a comfortable media room, while multiple extra closets, an in-unit washer/dryer and powder room add effortless ease. Smart home automation controls shades, lighting and A/V equipment throughout this rare SoHo showplace.

111 Mercer Street is an ultra-private boutique condominium featuring a virtual doorman system and just four total units. Designed in 1868 by Henry Fernbach, a prominent name among SoHo's cast-iron masterpieces, the award-winning building was converted to condominium use in 2013. Located within the SoHo Cast-Iron Historic District, between Spring and Prince, this home sits at the epicenter of downtown cool, surrounded by the city's best dining, nightlife and shopping.