- 2homes2worlds.com 2018/08/17/chateau-dif/Château d’If – history and legends. Marseille is protected from the sea by four islands of the Frioul archipelago, located near the shore.
- ba-bamail.com content.aspx?emailid=14096The famous Château d'If began as a formidable fortress, built as a defensive post in 1524 on the small island of If.
- civitatis.com en/marseille/chateau-if-ticket/Located opposite the port of Marseille, Château d'If was one of the most feared and notorious jails in France.
- france.fr en/article/chateau-if-0The Château d'If, the famous island fort facing Marseille immortalised by Alexander Dumas in The Count of Monte Cristo.
- itinari.com location/chateau-d-if-in-marseilleChâteau d'If. Address: Embarcadère Frioul If, 1 Quai de la Fraternité, 13001 Marseille, France. ... Places to visit around Château d'If.
- http://prisonhistory.net famous-prisons/chateau-dif-…After serving as a prison for more than a century, Château d'If was finally demilitarized and transformed to a public tourist attraction on September 23, 1890.
- tourisme.monuments-nationaux.fr en/Tickets2/…Château d'If. Château d'If. The famous island fort facing Marseille immortalised by Alexander Dumas in The Count of Monte Cristo.
- encyclopedia.com reference/encyclopedias-almanacs…Château d'If (shätō´dēf´), castle built in 1524 on the small rocky isle of If, in the Mediterranean Sea off Marseilles, SE France.
- commons.wikimedia.org wiki/Category:Château_d'If
- travel.usnews.com Marseille_France/Things_To_Do/…Château d'If is a 16th-century fortress, commissioned by King Francois I, set atop the smallest island in the Frioul archipelago less than a mile from Marseille.