This exceptionally grand and elegant six-story townhouse, complete with a finished full-ceiling height basement, epitomizes luxury, functionality, and style. Originally constructed in the early 20th century, the residence has been beautifully renovated to blend modern amenities and comforts with the timeless elegance of prewar architecture. Situated on a serene, tree-lined townhouse block in the Upper West Side's historic district, this 21-foot-wide brownstone offers a wealth of luxurious features and showcases a harmonious mix of spectacular custom design elements and classic details. Every aspect of the home has been meticulously crafted, from its state-of-the-art systems to the high-quality materials and custom interiors. Unique for townhomes, it boasts wonderful natural light throughout, with over 11-foot ceilings, outdoor spaces on four floors, double exposure on the second and third floors, oversized picture windows, and a magnificent skylight on the sixth floor. Spanning 8,500 square feet, including a fully finished full height cellar, this single-family home features a private elevator serving six floors and an elegant staircase with a curling banister that ascends to a striking skylight. The thoughtfully designed layout offers distinct areas for formal entertaining, casual gatherings, and private living. It includes 5 bedrooms and 6.5 bathrooms, with a dedicated primary suite floor featuring a spacious gallery-dressing area with abundant custom closets, a luxurious spa-like bath, and a home office/library. The beautiful garden floor is an amazing casual entertaining floor with a spacious den/media room, open European chef's kitchen with breakfast dining area and a gorgeous, landscaped garden. The top penthouse floor offers a special sun-drenched retreat with a large, landscaped terrace and Juliet balcony while the fully finished cellar includes a private sauna and a large temperature wine cellar-tasting room. Each bathroom is equipped with high-end spa amenities and select high-end materials. The primary bath and sixth floor bath offer radiant heated floors. The home is outfitted with modern conveniences such as Smart Home technology, multi-zone central air conditioning, whole-house lighting control, two laundry areas, and a high-end audio system. The six wood-burning fireplaces, each uniquely designed with custom mantels, add to the home's gorgeous design. Throughout the house, you'll find stunning hardwood floors with a herringbone pattern on the formal floor, custom moldings, and classic details. The private outdoor spaces are equally impressive, featuring a beautifully landscaped 30-foot garden and three terraces on the parlor, fourth, and sixth floors, as well as a Juliet balcony on the top floor. 308 West 88th Street enjoys a very desirable location between Riverside Drive and West End Avenue and is perfectly positioneda half block from Riverside Park and the Soldiers and Sailors monument,as well as only one-and-a-half blocks from excellent shopping, dining, and transportation options. Bordered along the block entirely by other brownstones, most of which are single-family, this beautiful tree-lined street is a wonderful residential, community setting in the heart of the Upper West Side. The house is within the Riverside-West End Historic District.