1087

Events

Summer - The Taifa of Valencia falls under the domination of El Cid. He stabilizes the region around Valencia, which has revolted against the Moorish puppet ruler Al-Qadir.
Inge the Elder returns to Svealand and kills his brother-in-law Blot-Sweyn after a 3-year reign. Inge again proclaims himself king of Sweden.
England
September 9 - William the Conqueror dies in Rouen after a fall from his horse. He is succeeded as king of England by his third son William II.
A fire in London destroys much of the city, including Old [St Paul's Cathedral|St. Paul's Cathedral]. Bishop Maurice starts the rebuilding of a new, much larger cathedral.
Africa
Mahdia campaign: The navies of Genoa and Pisa take the capital of the Zirids, and occupy Mahdia for a year. Subsequently, both republics obtain trading privileges.
Completion of Bab al-Futuh, Cairo
Japan
January 3 - Emperor Shirakawa abdicates in favor of his 7-year-old son Horikawa after a 14-year reign. He exerts his personal power to set the cloistered rule system further in motion.
Middle East
May: The marriage of Caliph al-Muqtadi and Mah-i Mulk is consummated. This marriage strengthens the political relation of Malik-Shah I and the Caliph.
By topic