Subdivisions in 33140 Zip Code

Modern Design Meets Timeless Elegance

Soaring above the turquoise waters of Biscayne Bay, 3900 Alton introduces the visionary architecture of world-renowned maestro Ricardo Bofill to Miami Beach’s historic core. This exclusive residential sanctuary redefines luxury with breathtaking views, unparalleled convenience, and an unwavering commitment to elegance.

Crafted by Mast Capital in collaboration with a curated team of designers, artists, and master craftsmen, 3900 Alton embodies a lifestyle of understated opulence—seamlessly blending contemporary sophistication with the natural beauty of its unrivaled setting.

A Legacy of Distinction

Nestled on land once owned by Miami Beach pioneer John Collins, 3900 Alton stands at the crossroads of history and modernity. The site’s storied past traces back to the 1920s, when it flourished as a glamorous winter retreat before evolving alongside Miami Beach’s golden era. Once graced by lavish estates, the property lies just south of Carl Fisher’s iconic Nautilus Hotel—now home to Mt. Sinai Medical Center.

In the post-war boom, legendary architects like Morris Lapidus reshaped the landscape with modernist masterpieces such as the Saxony, Eden Roc, and Shore Club. Today, Ricardo Bofill reimagines this legacy with a bold yet timeless vision, transforming 3900 Alton into a residential landmark that honors the area’s illustrious heritage while setting a new standard for luxury living.

Mid-Beach: A Sanctuary of Refined Living

3900 Alton joins a distinguished collection of luxury developments revitalizing Mid-Beach, a neighborhood celebrated for its serene elegance, pristine shores, and effortless charm. A true coastal oasis, Mid-Beach offers residents immediate access to world-class golf, yachting, and water sports—all just moments from the Atlantic.

Beyond its natural allure, the area boasts proximity to Miami’s finest shopping, dining, and cultural destinations. From high-end boutiques to acclaimed galleries and Michelin-starred restaurants, Mid-Beach captivates a global audience with its architectural grandeur and cosmopolitan energy. This dynamic fusion defines the neighborhood’s unparalleled cultural prestige.

The Visionary Touch of Ricardo Bofill

At the heart of 3900 Alton lies the genius of Ricardo Bofill, founder of Taller de Arquitectura, whose designs epitomize simplicity, functionality, and grandeur. Renowned for his philosophy of “genius loci”—capturing the spirit of a place—Bofill has crafted a modern botanical haven within Mid-Beach.

The property’s 78 private residences are encased in a striking glass façade, mirroring the shimmering waters of Biscayne Bay while embracing the neighborhood’s coastal essence. Every detail reflects Bofill’s mastery, ensuring a living experience that is as aesthetically profound as it is serene.

An Unmatched Location

Strategically positioned at the gateway to Mid-Beach, 3900 Alton commands an expansive 1.8-acre site with uninterrupted views of Downtown Miami and Biscayne Bay. Its prime location offers effortless connectivity while maintaining an air of secluded luxury.

Designed for Tranquility

At 3900 Alton, every space is a retreat. The spa-inspired bathrooms are sanctuaries of relaxation, featuring premium marble finishes, frameless glass showers, and deep soaking tubs—transforming daily rituals into moments of indulgence.