Designed in 1928 by renowned architect Emmet Martin, this stately palazzo was modeled after the Medici villas and featured in Architectural Digest just a year after it was built. The home blends old-world elegance with modern amenities and a practical floor plan. Originally commissioned by the owners of the Kay-Brunner Steel Casting Company, the property showcases stunning architectural craftsmanship: original wrought ironwork, a handmade entrance gate, chandeliers, sconces, carved wooden doors, ornamental steelwork, and hardwood floors all beautifully preserved and thoughtfully integrated throughout. A grand foyer and sweeping spiral staircase lead into an elegant living room with a classic marble fireplace and French doors that open onto a spacious terrace with its own fireplace perfect for romantic California evenings and seamless indoor-outdoor entertaining. The formal dining room features dramatic wrought iron lighting and connects to a chef's kitchen equipped with Thermador and Viking appliances, an oversized center island with breakfast bar, and a walk-in pantry. Adjacent to the kitchen is a casual living area, with a staircase leading down to a storage basement. Completing the main level are a guest bathroom with pool access, a laundry room, and a large bedroom suite. Upstairs, a spacious landing opens to four-bedroom suites. The primary suite includes a walk-in closet, dual vanity, shower, spa tub, and a private office area that leads to a tranquil balcony. A separate terrace provides the perfect spot for morning coffee or enjoying the Lacy Park July 4th fireworks. The beautifully landscaped grounds include a fireplace lounge, lighted paddle tennis/sports court, heated pool and spa, lush gardens, a fountain, a two-car garage, and a circular driveway with ample parking. Ideally located near Lacy Park, the Langham Hotel, and the Huntington Library, this exceptional home is also within the award-winning San Marino school district. NOTE: Tax assessor shows property as 4BR plus downstairs family room.