Tour ultra-wealthy Monaco during the evening, when the twinkling lights of Old Town and Monte Carlo enhance the romantic ambiance. Despite being just over three-quarters of a square mile in size, Monaco is fabulously wealthy and it shows, as you will discover while walking through the fortified Old Town, known as the Rock. As you pass the Oceanographic Museum, you may notice that it is built right into the rock cliff, making it one Monaco’s most distinctive buildings. Nearby, you will find the magnificent Cathedral of the Immaculate Conception, where in 1956 Prince Rainier II married Grace Kelly in what was hailed as the wedding of the century. You will also see the palace of the reigning prince. During free time, you might further explore spacious Palace Square before continuing on to Monte Carlo, Monaco’s principal residential and resort area. A scenic walk will bring you to Casino Square for a close-up view of the grand Monte Carlo Casino.