The World’s Most Expensive $3 Billion Waterfront Neighborhood Rises in Monaco

• Monaco, home to the world’s wealthiest elite, is expanding its coastline with the six-hectare Mareterra project.
• The $2 billion USD (~$3 billion AUD) eco-district features luxury apartments, villas, and green spaces, setting new standards in high-end, sustainable real estate.
• Designed by architectural icons Renzo Piano and Sir Norman Foster, Mareterra blends ultra-luxury living with cutting-edge sustainability.

In 1861, when Monaco ceded 95% of its territory to France in exchange for independence, it is unlikely that many would have expected this little principality to become the world’s most exclusive playground for the very rich. Nowadays, this second-smallest country in the world proudly retains that one in three individuals in the country is a millionaire, drawn by its fabled exclusiveness, excellent security, and tax-free income policy.

Amid this haven of luxury emerges Mareterra, a groundbreaking development that has claimed the title of the world’s most expensive neighbourhood, with a staggering valuation of $2 billion USD (~$3 billion AUD). This visionary project extends Monaco’s coastline while setting new standards for sustainable ultra-luxury living.

A New Era of Luxury Living

Mareterra is a six-hectare reclaimed land residential development that increases Monaco by 3% in terms of land area. It is designed by architectural titans Renzo Piano, Sir Norman Foster, and Stefano Boeri. The project features two distinctive residential complexes, Le Renzo and Les Jardins d’Eau.

The two towers hold over 100 ultra-luxury residences and ten exclusive villas – seven waterfront and three rear residences – each with unrivalled views of the Mediterranean. The project’s harmony with nature is perfectly achieved, featuring 800 specially selected Tuscan trees and large vertical gardens.

Revolutionary Sustainable Living

Mareterra sets new environmental design standards, with renewable energy systems providing 80% of all heating and cooling demand. The district features 200 electric vehicle charging stations, 600 meters of cycle lanes, and advanced rainwater recovery systems, recycling 50% of the rainfall. A car-free design sets aside over 40% of the land for pedestrian areas and greenery, and advanced geothermal systems and solar panels support Monaco’s goal to become carbon neutral by the year 2050.

Unparalleled Amenities

The crowning glory of the complex is a saltwater infinity pool that spills out onto the Mediterranean and a private marina with direct entry to the Port Hercules and the Monte Carlo Yacht Club. The villas feature private gardens, roof terraces, and underground parking, while the apartments feature floor-to-ceiling windows and smart home automation.

High-end shops and luxury restaurants line commercial zones, creating a contained luxury setting. The visionary design of the development ensures that all residences enjoy both privacy and sea views, with prices in excess of $130,000 USD (~$200,000 AUD) per square meter.

Due for completion in 2025, Mareterra is more than real estate — it is a reflection of Monaco’s luxury with a conscience. With a mix of architectural innovation, eco-consciousness, and unprecedented luxury, this floating sanctuary sets the bar for elite living while sparing the planet’s resources for the future. Perhaps that is the reason the project has already attracted global billionaires and celebrities to make Mareterra their next home address.