Under contract-accepting backup offers. A Once-in-a-Lifetime Offering! Introducing Penthouse #401 at Halcyon Siesta Key—an extraordinary coastal sanctuary where architectural brilliance meets unparalleled exclusivity. This is not just a residence; it’s a legacy. Set atop a boutique, six-unit Gulf-front building, Penthouse #401 is the first and only unit ever to be offered for sale—a true rarity as timeless and coveted as the quartz-crystal sands of Siesta Key Beach, just beyond your expansive floor-to-ceiling windows. Enter through a private elevator into your own foyer and be instantly captivated by panoramic views of the Gulf of Mexico. Encompassing 3,525 square feet, this residence was masterfully designed to blend modern sophistication with relaxed coastal luxury. At the heart of the home lies a chef’s kitchen that redefines gourmet living: top-of-the-line Wolf appliances, double ovens, dual sinks, an oversized island, built-in wine fridge, walk-in pantry, coffee bar, and bespoke cabinetry—crafted for both grand entertaining and effortless everyday living. The open-concept layout flows gracefully through dining and living spaces, enhanced by polished terrazzo flooring and Lutron-controlled lighting and shades that adjust with the touch of a button. Wake up to shimmering Gulf views in the tranquil primary suite, a true retreat offering a spa-like en-suite with radiant heated floors, dual vanities, a sculptural soaking tub, and an oversized glass-enclosed shower. Step outside to a spectacular 674 sq. ft. wraparound balcony—ideal for morning espresso, sunset cocktails, or simply soaking in Siesta Key’s year-round beauty. Three additional guest suites provide private en-suite baths and generous closet space, while a full laundry room, powder bath, and abundant storage complete the home’s thoughtful layout. A private two-car garage ensures convenience and security—an invaluable feature in this exclusive enclave. Life at Halcyon is curated for ease and elegance, with upscale amenities including on-site maintenance, a historic clubhouse, beachfront pool, grilling station, fire pit, and private beach access. Just minutes from Siesta Key Village and Sarasota’s cultural and culinary delights, this location offers the perfect blend of privacy and accessibility. Penthouse #401 is more than a luxury residence—it’s a one-of-one opportunity to own a piece of Gulf-front history on Florida’s most treasured beach.