Classical Age of the Ottoman Empire
Expansion continued during the first half of the reign of Suleiman I (r. 1520-1566), who conquered first Belgrade (1521) and Rhodes, before invading Hungary in 1526, defeating and killing King Louis II in the Battle of Mohács and briefly occupying Buda. Lacking a king, Hungary descended into civil war over the succession, and the Ottomans gave support to John Zápolya as a vassal prince. When their rivals the Habsburgs began to achieve the upper hand, Suleiman directly intervened by again conquering Buda and annexing it to the empire in 1541. Elsewhere, Suleiman led major campaigns against Safavid Iran, conquering Baghdad in 1534 and annexing Iraq. Ottoman rule was further extended with the incorporation of much of North Africa, the conquest of coastal Yemen in 1538, and the subsequent annexation of the interior.
Sultans Trail
Sultans Trail ("recte" Sultan's) takes its name from sultan Süleyman Kanuni, Suleiman the Magnificent, of the Ottoman Empire who led Ottoman armies to conquer Belgrade and most of Hungary before his invasion was checked at the Siege of Vienna. The main path follows the route of sultan Suleiman the Magnificent on his way to Vienna. He started on 10 May 1529 from Istanbul and arrived 23 September 1529 in Vienna (141 days). It was to be the Ottoman Empire's most ambitious expedition to the west, but the Austrian garrison inflicted upon Suleiman his first defeat. A second attempt to conquer Vienna failed in 1532. In 1566, at the age of 60, the sultan led his army for the last time; he died close to Szigetvár in Hungary.