View on the Monaco’s construction project to expand into Mediterranean sea. By 2025, the 15-acre neighborhood, called Anse du Portier (or Portier Cove), will increase the principality’s size by 3 percent and feature 120 luxury apartments, 10 over-the-top villas, a seaside promenade extending to Monte-Carlo Beach, and a Portofino-inspired port dreamed up by Pritzker Prize-winning architect Renzo Piano—all on Monaco’s last remaining sliver of untouched shore.