This majestic home originally built in 1881 stands as one of the earliest and most distinguished summer "cottages" in Quogue. Designed by renowned architect Isaac Green, whose opulent mansions graced Long Island's South Shore during the Gilded Age, this grand residence which was named "Bella Mar" is rich in both architectural pedigree and cultural history. Among its notable former owners is Tony Award winning director and playwright Arthur Laurents (West Side Story), who, in the 1950's divided the original structure into two residences, the second now next door at 109 Quogue Street. Set on approximately 1.6 acres of impeccably landscaped grounds, this 5600+/- square foot three-story home is surrounded by mature plantings and tall privet hedges, offering unmatched privacy. A well-situated gunite pool further enhances the serene estate-like setting. A winding stone drive leads to the expansive front porch and impressive foyer, where 10-foot ceilings set the tone for the interior's scale and elegance. The sun-filled living room and formal dining room, both with fireplaces, create ideal spaces for entertaining. A separate library offers a quiet retreat, while the bright kitchen opens into a charming sun porch overlooking the peaceful gardens, a tranquil spot to enjoy morning coffee. Central air conditioning serves the main floor, while ductless units provide comfort on the upper levels. A striking staircase, framed by 8-foot stained glass windows with diamond motifs, ascends to the second floor, which features a central landing with fireplace and three generous bedrooms, two of which are en-suite with fireplaces and walk-in closets. The third floor continues the theme of character and charm with with tall barrel ceilings, a cozy landing with built-in bench seating, three additional bedrooms, and two baths. Below, the full basement reveals the home's original stone foundation, a testament to its enduring craftsmanship. This is a rare opportunity to own a timeless estate available once in a generation. Listing ID#923383