A milestone birthday deserves a setting that matches the occasion. Monaco — with its concentration of world-class venues, exceptional performers and Mediterranean glamour — offers something that few destinations can: a backdrop that makes even the most discerning guest feel the weight and joy of the moment. Whether you are planning a 40th, 50th, 60th or 70th birthday party in Monaco, the Principality provides the infrastructure, the talent and the prestige to transform a celebration into a genuinely landmark evening.…