16425 Collins Ave Os18a Experience elevated coastal living from one of the most unique residences in Sunny Isles Beach. Perched on the top floor of Oceania I, this spectacular duplex penthouse offers breathtaking panoramic views of the Atlantic Ocean, Intracoastal Waterway, and the Miami skyline through dramatic floor-to-ceiling glass. Thoughtfully redesigned with contemporary finishes, the residence features soaring ceilings, a striking floating staircase with glass railings, expansive open living spaces, custom built-ins, designer lighting, and oversized marble flooring throughout. Every room is filled with natural light and framed by unforgettable water views. The spacious primary suite is a true private retreat, complete with custom walk-in closets, a spa-inspired bath featuring a freestanding soaking tub, oversized glass shower, and dual vanities. Generous guest accommodations provide comfort and privacy, each with its own spectacular outlook and access to private terraces. Perfect for entertaining, the open-concept living and dining areas seamlessly connect to multiple outdoor spaces where you can enjoy sunrise over the ocean and sunset over the Intracoastal. Residents enjoy the renowned Oceania lifestyle with 24-hour concierge and security, valet parking, private beach service, resort-style pools, fitness center and spa, tennis courts, marina access, restaurants, and the exclusive Oceania Club.