History of Oradea

Georg von Peuerbach worked at the Observatory of Varadinum, using it as the reference or prime meridian of Earth in his Tabula Varadiensis, published posthumously in 1464.

In 1474 the city was devastated by the Turks. It was not until the 16th century that Oradea started growing as an urban area. The Peace of Várad was concluded between Ferdinand I and John Zápolya here on 4 February 1538, in which they mutually recognized each other to be king. In the 18th century, the Viennese engineer Franz Anton Hillebrandt planned the city in the Baroque style and, starting from 1752, many landmarks were constructed such as the Roman Catholic Cathedral and the Bishop's Palace, presently the Muzeul Țării Crișurilor ("The Museum of the Criș-es land").

After the Ottoman invasion of Hungary in the 16th century, the city was administered at various times by the Principality of Transylvania, the Ottoman Empire, and the