Custom-commissioned Columbia River waterfront penthouse, composed to reflect the water it faces. Two bedrooms, three-and-a-half baths and 4,269 square feet across a single level at Tidewater Cove.Every surface was drawn and cut for these rooms, composed from four materials in melodic repetition: hand-troweled cement, quartersawn sapele, stone and stainless steel.Oversized glass pivot entry opens to the art gallery hall, cement muted like the clouds beyond, museum-grade lighting recessed tucked into sapele coffers to illuminate your collection. The river arrives later, its silver carried inward by stainless inlay glimmering in sheets of stone.In the chef's kitchen, Brown Antico granite wraps the counters as underlit shelving floats above. Bleached fiddleback maple houses Wolf and Sub-Zero appliances; a walk-in pantry and butler's pantry with wine storage and integrated coffee sit in reach and out of view. A wall of quartzite allows the gas fireplace to float inline with the waterline. Wide-plank white oak warms the floor; sapele crosses the ceiling and pours into the library shelving.The river-facing primary suite retreats into Venetian plaster, then into walls of ivory vein-cut travertine wrapping a spa tub, a basin carved from a single block of honey onyx. Two dressing rooms follow, centered by a marble island with built-in vanity and mirror-fronted cabinetry. A river-facing built in study complete the serenity of the interior. Three private terraces with sink and grill, Lutron shades, and four secure garage spaces with EV charging begin the exterior.Tidewater Cove unfolds across 22 landscaped acres: swans in ponds, trails to the marina, grounds with sunrise behind Mt. Hood, and pool, spa, sauna, fitness center, tennis and pickleball cared for beyond your door. Minutes from the Vancouver Waterfront and wooded waterfall hikes.