Monaco occupies 2.02 square kilometers on the Mediterranean coast between France and the sea, making it the world's second-smallest sovereign state after Vatican City. The entire country functions as a single municipality without rural areas or separate towns. Five administrative districts organize the territory: Monaco-Ville sits atop the 62-meter limestone Rock of Monaco, Monte Carlo spreads across the northern slopes, La Condamine wraps around Port Hercules at sea level, Fontvieille extends across land reclaimed from the Mediterranean beginning in the 1970s, and Larvotto occupies the northeastern beach zone. Visitors can walk across the country's greatest width in under an hour.
The Prince's Palace of Monaco anchors the Rock of Monaco, functioning as the official residence of the Sovereign Prince since the Grimaldi family captured the fortress in 1297. François Grimaldi and his men disguised themselves as Franciscan monks to gain entry, establishing a dynasty that continues under Prince Albert II, who acceded in 2005. The palace complex combines medieval fortifications with wings added during subsequent centuries. State Apartments open to visitors from April through October when the prince travels. The daily Changing of the Guard ceremony occurs at 11:55 AM in the palace square. The Carabiniers du Prince, Monaco's military force of approximately 100 soldiers, perform the ritual in summer and winter uniforms depending on season.
Monaco Cathedral stands near the palace in Monaco-Ville, constructed between 1875 and 1911 in Roman-Byzantine style using white stone from La Turbie. Prince Rainier III and Princess Grace married here on April 19, 1956, after their civil ceremony at the palace. Princess Grace died in a car accident on September 14, 1982, on the road from La Turbie to Monaco. She lies buried in the cathedral alongside Prince Rainier III, who died April 6, 2005. The Grimaldi necropolis contains remains of other sovereign princes beneath the altar area. The cathedral functions as the seat of the Archdiocese of Monaco, established as a separate ecclesiastical territory in 1981.
The Oceanographic Museum occupies a cliff face 85 meters above the Mediterranean, inaugurated by Prince Albert I on March 29, 1910. Prince Albert I conducted 28 oceanographic expeditions between 1885 and 1915, mapping currents and collecting specimens across the Atlantic and Arctic. The museum building required eleven years of construction, using 100,000 tons of stone from La Turbie. The main hall rises through multiple stories under a glass roof, displaying whale skeletons suspended from ceiling infrastructure. Jacques Cousteau directed the museum from 1957 to 1988. The basement aquarium system holds approximately 4 million liters of seawater pumped directly from the Mediterranean, circulating continuously. Ninety aquarium tanks display roughly 6,000 specimens representing over 200 Mediterranean and tropical species.
Monte Carlo Casino opened February 14, 1865, in a building designed by Charles Garnier, who simultaneously designed the Paris Opera. François Blanc, operator of Bad Homburg casino in Germany, received the gaming concession and financed construction. The casino operated as Monaco's primary revenue source through the late 19th century, allowing Prince Charles III to abolish direct taxation for Monégasque citizens in 1869. The gaming rooms feature Garnier's Belle Époque interiors with ceiling frescoes, gilded moldings, and onyx columns. The atrium connects to Opéra de Monte-Carlo, a 524-seat opera house also designed by Garnier and inaugurated January 25, 1879. The Ballets Russes premiered multiple works here between 1911 and 1929, including Stravinsky's Petrushka in 1911 and Ravel's Daphnis et Chloé in 1912. Monaco citizens cannot enter the gaming areas by law, a restriction dating to the 19th century.
The Monaco Grand Prix runs 3.337 kilometers through Monte Carlo and La Condamine streets, making it the shortest Formula 1 circuit by lap distance. The race first occurred April 14, 1929, organized by Antony Noghès, founder of the Automobile Club de Monaco. The circuit climbs 42 meters in elevation from the harbor to the casino area. Drivers complete 78 laps for a total race distance of 260.286 kilometers. The track includes the Casino Square hairpin, where cars decelerate to approximately 50 kilometers per hour, and the tunnel section where cars accelerate above 260 kilometers per hour before braking for the harbor chicane. Ayrton Senna won the race six times between 1987 and 1993. Graham Hill won five times in the 1960s. The race occurs annually in May, with the circuit requiring four to six weeks of barrier installation and removal. Street sections return to public traffic outside race periods.