1. The Chateau d’If is a fortress located on an island off the coast of Marseille, France. It was built in the 16th century as a defensive structure to protect the city from sea attacks. The fortress served as a prison for more than 400 years, with its most famous inmate being Edmond Dantès, the protagonist of Alexandre Dumas’ novel The Count of Monte Cristo. Visitors can explore the fortress and its prison cells, as well as enjoy spectacular views of the Mediterranean Sea from the ramparts.

2. The Chateau d’If is open to visitors every day except for January 1st, May 1st, and December 25th. The opening hours vary by season, so it’s important to check the official website or call ahead for the most up-to-date information. The phone number for the fortress is +33 4 91 59 02 30.

3. Tickets to visit the Chateau d’If can be purchased at the entrance or online in advance. The price of admission varies depending on the visitor’s age and whether they choose to visit the fortress only or combine the visit with a boat tour of the surrounding islands. Visitors can reach the island by taking a ferry from the Vieux-Port of Marseille. The ferry ride takes approximately 20 minutes.