Located on a beautiful tree-lined stretch in the heart of Carnegie Hill, 164 East 91st Street is a refined, light-filled townhouse with exceptionally low annual taxes under $25,000, offering approximately 5,000 square feet of thoughtfully designed interior space across four full floors plus a finished basement level. The home is complemented by roughly 1,600 square feet of private outdoor areas, including a multi-tiered landscaped garden with a pond, a terrace off the fourth floor, and a partially finished rooftop. Distinctive architectural character is evident throughout, with oversized picture windows, elegant exterior detailing, a landscaped gated entry courtyard, and charming window boxes that enhance the facade.