Monaco, also known as Monte Carlo is squeezed into just 200 hectares, is world’s second-smallest country (the Vatican is smaller), but what it lacks in size it makes up for in attitude. A magnet for high-rollers and hedonists since the early 20th century, it's also one of the world's most notorious tax havens (residents pay no income tax). It's also famous for its annual Formula 1 Grand Prix, held every year in May since 1929. Despite its prodigious wealth, Monaco itself is a long way from the prettiest town on the French Riviera: it's basically an ode to concrete and glass, dominated by high-rise hotels and apartment blocks that rise into the hills like ranks of dominos, not to mention an utterly bewildering street layout that seems solely designed to confound lowly pedestrians.
It's a rather different story on the rocky outcrop known as Le Rocher, which juts out on the south side of the port and is home to the royal palace, as well as a rather charming little old town which feels a world apart from Monte Carlo's skyscrapers and super yachts.
Best way to explore Monaco is through conducted bus tour. As you get off the train at Monaco station (journey takes about 15 min whether you are coming from Nice or Manton side), ask for exit towards port. As you come out of the station, you come face to face with the big port. You can get the tour bus ( take the top seat of the double-decker bus to explore the city thoroughly); the tickets are provided inside the bus for about 22 Euro per 1 hour. One can get down at any destination & board the next bus after 30 min by using the same ticket. Best thing to witness is change of guard at top of hill. But to see that you have to reach there before noon; as noon is the time of change of guard & it is worth watching.
There is a beautiful ice skating rink & big port, wherein best ships of world can be seen..