• Around 6 000 B.C. : Belle-Île is isolated by rising water levels
• IVth century A.D. : Vindilis' mentioned in the Antonine itinerary.
• 1004 : : « Guédel» island is given to the Benedictines of Redon
• 1029 : Belle-Île is entrusted to the Benedictines of Quimperlé     
• 1549 : François of Rohan commences construction of the first fort
• 1573-1658 : Marquisat des Gondi    
• 1617 : The poet Saint-Amant composes his "Solitudes" in the Gondi court
• 1658-1661 : Marquisat de Nicolas Fouquet    
• 1674 : Dutch descent resulting in the relocation of Palais market town.
• 1682 : Twelve poisoners are imprisoned in the citadel. 
• 1683 - 1685 - 1689 : Vauban comes to Belle-Ile to improve the state of defenses
• 1718 : Inclusion of the island in the royal domain    
• 1720-1722 : Belle-île is indentured to the East India company   
• 1759 : Battle of Quiberon Bay     
• 1761-1763 : Citadel siege then occupation by the English 
• 1765 : Influx of 78 Acadian families   
• 1800 : Cadoudal conspiracy to seize Belle-ile     
• 1802-1870 : Construction of Palais city walls  
• 1846 : Opening of the first sardine cannery
• 1850 : Incarceration of Barbès and Blanqui    
• 1886 : Claude Monet stays in Kervilahouen    
• 1894 : Sarah Bernhardt explores the pointe des Poulains    
• 10th May 1945 : Liberation of Belle-Île    
• 12th August 1960 : The government sells the citadel Museum Vauban Citadel - The 1st Museum hôtel in France