4100 Mariners Way Rare Park-Backing Home bordering Alum Creek State Park - Steps to Marina & Dog Park, Private Backyard retreat! Beautiful retreat in Olentangy Schools, perfectly nestled at the end of a cul-de-sac on a spectacular nearly half-acre lot backing to over 240 ft of Alum Creek State Park. With nearly 3, 500 sq ft of living space, this home offers the perfect blend of privacy, nature, & everyday comfort. The lush landscaping and inviting curb appeal set the tone. Step inside to a dramatic two-story foyer highlighted by an elegant open spindle staircase. The front living room and formal dining room are filled with natural light from beautiful bay windows, creating warm and welcoming spaces for gathering and entertaining. The updated kitchen features quartz countertops, tile backsplash, stainless steel appliances, gas range, range hood, abundant prep space, and a spacious eating area overlooking the incredible backyard. The adjoining great room is a true centerpiece, complete with a wood-burning fireplace with gas start and panoramic views of the private outdoor setting. Relax and unwind in the tranquil three-season room or step outside to experience the showstopping backyard oasis. Designed for entertaining and enjoying nature, the outdoor space includes a patio, pergola, fenced area with water feature and charming bridge, plus a concrete slab with 220 hookup ready for a future hot tub. With direct access just steps away to Alum Creek trails, this property offers a rare lifestyle opportunity. Upstairs, you'll find four spacious bedrooms, including a generously sized owner's suite with private bath, dual sinks, soaking tub, separate shower, large walk-in closet, and additional linen storage. The finished basement adds even more versatility with brand new carpet, additional recreation space, half bath, and beautifully finished bar area complete with sink and granite counters. This exceptional home combines space, updates, privacy, and an unbeatable natural setting.