First step of the ambitious portier cove monaco project completed

The first phase of the exciting Portier Cove Monaco project and arguably one of the most important – the Portier roundabout, which will act as a gateway to the exciting eco-district – is now complete. 


Work on this crucial infrastructure of the Portier Cove Monaco development officially ended on May 13th 2020, some two years after it began. 

The traffic island, which looks more like New York’s iconic Guggenheim Museum than a roundabout, has been acknowledged as the ‘nerve centre of the project’. 

But the importance of the Portier roundabout is not that it is simply the gateway that leads to Mareterra Monaco’s prestigious residences, heralded as amongst the most luxurious addresses anywhere in the world. 

The junction is also one of the most important traffic hubs in the Principality, with roads leading from it taking motorists to the Larvotto district in the east, and the Port of Monaco to the west. The northern exit leads to the famous Monte-Carlo district whilst motorists accessing the tunnel from the roundabout will be able to cross the Principality and head from east to west towards France, Italy and the Fontvieille district. 

In addition, the Portier roundabout also provides access to a 600-space car park under the award-winning Grimaldi Forum conference centre, where events such as the Top Marques supercar show are held each year. 

Whilst outwardly the roundabout looks like an iconic art museum, to which a number of green areas will soon be added, it is also an incredible feat of practical design.

The roundabout also contains a vital network of cables, pipes, duct and collectors hidden under the junction. These will supply gas, electricity, drinking water and telephone services to the residences of Mareterra Monaco

Named after the famous marine biologist Paul Portier who was once at Monaco’s Oceanographic Institute, the roundabout also has a ramp called a ‘ferrule’ which is the main access point to the new Anse du Portier district. 

Anyone accessing the eco-district via the Portier roundabout will be navigated to a series of car parks under the buildings.  All surface routes on the extension will be entirely pedestrian.

Portier Cover Monaco is the Principality’s most cutting edge project to date. The $2.4 billion land reclamation development will create more than six hectares of new residences and open spaces, with villas, houses and apartments designed by Valode & Pistre and the Pritzker Prize-winning architect Renzo Piano.

The expected completion date for Mareterra Monaco is 2025, with the construction of the first buildings scheduled for 2022.