Nearby the Oceanographic Museum you will find one of the largest parking lots in Monaco (Parking des Pecheurs), which we already recommend to use while exploring the Old Town, so you don't have to look for a special place to park your car in order to visit the cathedral. Access to this parking lot (P; GPS: 43.731683, 7.427505) is available via Avenue de la Quarantaine, and then a short Pêcheurs tunnel. Note: The first levels of parking are reserved for people working in the area of the Old Town.
The cathedral (A; GPS: 43.730003, 7.422624) was built between 1875-1903 and consecrated in 1911. It is located on the site of the first parish church in Monaco which was built in 1252 and was dedicated to St. Nicholas. In the cathedral are buried many persons of the Grimaldi family, including the prince Rainer III and his wife Grace Kelly. There is also beautiful organ, renovated in 2011, having interesting backlight.
On 13th May 2014 the street adjacent to the cathedral was called the "John Paul II Avenue" as a tribute to him. The ceremony was attended by princely couple - Prince Albert II with Princess Charlene, as well as the Polish Diaspora in Monaco.