Monaco

Monaco is correct because it’s a sovereign city-state: the country and its capital are the same entity, officially just Monaco. There is no separate “Monaco City”; Monaco‑Ville, often mistaken for it, is a historic quarter that hosts the Prince’s Palace and many government offices. Montenegro and Malta, by contrast, are separate countries with capitals Podgorica and Valletta. Monaco is the world’s second-smallest country on the French Riviera, famed for Monte Carlo, its casino, and the Formula 1 Grand Prix. Memory tip: like Vatican City and Singapore, some microstates double as their own capitals—so for Monaco, the capital is simply Monaco.