The standard of cooking at Le Louis XV – Alain Ducasserestaurant in Monaco is unarguably exceptional (in recent Telegraph interviews both Wolfgang Puck and Raymond Blanc declared it one of the best restaurants in the world) but it’s also an undeniably romantic spot. Richly decorated in gold, the lavish space looks more like the dining room of a palace than a typical restaurant. It’s a popular spot for couples celebrating engagements or anniversaries.