Welcome to 15 Cullen Street, a modern masterpiece located in the ocean block of the highly desired neighborhood known as Rehoboth by the Sea. Renowned architect, Randall Mars, carefully blended the ideal coastal setting with flawless design and sophistication. Situated only steps from the ocean, this stunning residence features a total of 5,500+/- square feet including 5 bedrooms, 6.5 bathrooms and casually elegant living spaces on each of the homes three levels. Upon entry, clean lines, tasteful dcor make a dramatic impression. The first level features 4 spacious bedrooms with luxurious spa-like baths, a spacious living area complete with wet bar with quartz counters and refrigeration. In addition, a mudroom with direct access to the outdoor shower and a 1-car garage, perfect for bikes and storage. Rich walnut stairs guide you to the main level (2nd) where you will find a spectacular great room complete with polished concrete floors, soaring ceilings and a sleek fireplace with marble surround. The interior space is fluidly connected to the environment by floor to ceiling glass that completely opens to the expansive terrace with seating area, built-in fire pit, dining area and outdoor kitchen with gas grill and beverage center. The custom kitchen features stunning white cabinetry, stainless steel appliances and a window stretching the length of counter. The island is emphasized with gorgeous quartz counters with a waterfall edge and range hood artfully built-in a walnut accent piece. The space is finished with a dining area, wine storage and beverage center. In addition, this level includes the primary suite complete with a custom walk-in closet and a luxurious and sleek private en-suite bath. Perched on the third level is a superior flex space currently being utilized as an executive office. This generously sized room includes a full bath, private balcony and direct access to the sundeck boasting superb ocean views. The home is visually striking, and the systems are equally as impressive. With top-notch security and surveillance, audio/video, and smart home technology throughout, you can manage everything remotely from a mobile device. This home includes many features that could not duplicated under todays building code, and it is truly a one-of-a-kind opportunity. All situated in a sought-after location offering one of the most gorgeous beaches along the Delaware coast. This home truly leaves little to the imagination!