Château d'If

Château d'If is a historic fortress located on a small island off the coast of Marseille, France. Built in the 16th century, it served as a military stronghold and later as a prison. It gained fame through Alexandre Dumas' novel "The Count of Monte Cristo," where it is depicted as a mysterious and treacherous prison. Today, the castle is a popular tourist attraction offering insight into France’s military history and stunning views of the Mediterranean Sea. Its structure includes thick stone walls, towers, and underground passages, making it an impressive example of Renaissance-era fortification.