A RARE opportunity to own a WORLD-CLASS TWO-STORY PENTHOUSE with a spectacular PRIVATE ROOF DECK. Rittenhouse Place-with two full floors and private elevator entrance has been seamlessly combined into an expansive 4,400+ square foot home, offering unmatched privacy, luxury, and sweeping views of the Philadelphia skyline. Step off the elevator into one of your two private secure vestibules with direct access into your penthouse. The upper level impresses with panoramic East, South, and West facing city views from walls of glass that flood the open-concept living space with natural light. Rich hardwood floors, two custom gas fireplaces made of slate and steel and an adjacent wet bar make this floor ideal for entertaining. The recently renovated chef's kitchen - designed by renowned firm J Thom - is a showstopper. It features sleek Mobalco cabinetry handcrafted in Spain, a quartzite island with a Wolf 5-burner gas cooktop and multi-speed range hood, sub-zero refrigerator and bar fridge, Wolf wall oven, and programmable steam oven, Just off the kitchen is a cozy family room with fireplace providing views of Rittenhouse Square. A large dining area, powder room and an impressive temperature controlled wine room with a 2,000 bottle capacity completes the level. Ascend the custom wood and cast-iron staircase to your private rooftop terrace—an extraordinary space large enough for grand-scale entertaining, yet intimate enough for sunset dinners. Enjoy lounge seating, grilling space, and jaw-dropping 360-degree skyline views. The lower level is devoted to rest and retreat. The luxurious primary suite offers southern and western exposures, a spacious walk-in closet, and a spa-style bathroom with double vanities, a soaking tub with skyline views, a glass-enclosed shower, and a private sauna. Three additional bedrooms provide flexibility for guests, home offices, or a gym, and share a beautifully appointed full bath. Just steps from Rittenhouse Square, this penthouse offers immediate access to Philadelphia’s best dining, shopping, cultural institutions and universities.