The siege of Buda (1686) was fought between the Holy League and the Ottoman Empire, as part of the follow-up campaign in Hungary after the Battle of Vienna. The Holy League retook Buda after 78 days, ending almost 150 years of Ottoman rule.

Hungary is a landlocked country in Central Europe. Spanning 93,030 square kilometres (35,920 sq mi) of the Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the south, Croatia and Slovenia to the southwest, and Austria to the west. Hungary has a population of 9.6 million, mostly ethnic Hungarians and a significant Romani minority. Hungarian, a language belonging to the Ugric branch of the Uralic language family is the official language, and Budapest is the country's capital and largest city.