Project MareTerra, unique in more than one way

Literally, the project « MareTerra » for sea and earth could not better bear its name. This immense construction represents a technological marvel, especially given the constraints. It, that shall be delivered with almost eight months in advance for the beginning of 2025. Indeed, for Monaco, small Principality of 2 kilomètres square for 39000 inhabitants, save some space is a permanent and hard challenge. Ever since the 50s, almost 40 hectares have been won over the Mediterranean sea but the MareTerra project has nothing in common with its predecessors. The Anse du Portier developer has had to face some even more important challenges than in the Middle East, due to environmental and seismic risks, as well as depth.

This future luxurious eco-neighborhood is located next to the Grimaldi Forum, Monaco’s congress center.

An underwater fill 50 meters deep !

Located between two protected maritime areas, the new eco-neighborhood has known multiple impact studies. As a consequence, nacres and Posidonia meadows had to be relocated in the Principalities protected areas. From a technical point of view, conceptors have first created an immense underwater fill that is 50 meters deep. A word first even for Monaco. Over this fill, the infrastructure consists of an embankment surrounded by a belt of concrete caissons, which in turn are placed on the embankment. This innovative and virtuous design takes care to protect the surrounding marine species.

Let's take a look at what's being created above the sea in this new, almost pedestrian-friendly district.

A luxurious and lush neighborhood

The Mareterra project relies on Renzo Piano, an architect who has already completed several real estate projects in Monaco, to design the buildings. In this new neighborhood of 6 hectares, 5 buildings and 10 villas are currently under construction for a total of 130 additional accomodations. Exceptionally green, the Mareterra district will feature a public park, bike paths, a seafront promenade, and a small marina, all set in a lush environment where nature takes center stage. 

This new space, designed for a sustainable and upscale lifestyle, has drawn strong interest from investors looking for properties for sale in Monaco or apartments for rent in Monaco, attracted by the rarity and exceptional quality of what’s on offer. According to rumors, nearly everything has already been sold at confidential — yet record-breaking — prices.


The ten villas, in particular, represent an absolutely extraordinary level of luxury in the Principality. A handful of future owners must be eager to settle into some of the most spectacular homes ever built in Monaco — if not in the entire world!