The Wawel Cathedral (), formally titled the Royal Archcathedral Basilica of Saints Stanislaus and Wenceslaus, is a Roman Catholic cathedral situated on Wawel Hill in Kraków, Poland. Nearly 1000 years old, it is part of the Wawel Castle Complex and is a national sanctuary which served as the coronation site of Polish monarchs. The current Gothic cathedral is the third edifice on this site; the first was constructed and destroyed in the 11th century and the second one, constructed in the 12th century, was destroyed by a fire in 1305. The construction of the existing church began in the 14th century on the orders of Bishop Nanker. Over time, the building was expanded by successive rulers resulting in its versatile and eclectic architectural composition. There are examples of Romanesque, Gothic, Renaissance, Baroque, Neoclassical and Neogothic elements in the cathedral's façade and interior. The exterior is adorned by side chapels and representative mausoleums, most notable being the golden-domed Sigismund's Chapel. It is the official seat of the Archbishop of Kraków and of the Archdiocese of Kraków. A symbol of Polish statehood and faith, the cathedral hosts important religious events and annual celebrations. Karol Wojtyła, who in 1978 became Pope John Paul II, the day after his ordination to the priesthood offered his first Mass as a priest at the Wawel Crypt on 2 November 1946, and was ordained Kraków's auxiliary bishop in the cathedral on 28 September 1958. Interior The cathedral comprises a nave with aisles, transepts with aisles, a choir with double aisles, and an apse with ambulatory and radiating chapels. The main altar, located in the apse, was founded about 1650 by Bishop Piotr Gembicki and created by Giovanni Battista Gisleni. The altar painting of Crucified Christ by Marcin Blechowski is from the 17th century. Over the main altar stands a tall canopy of black marble supported by four pillars, designed by Giovanni Battista Trevano and Matteo Castelli between 1626 and 1629. Underneath the canopy is placed a silver coffin of national patron Stanislaus of Szczepanów (also Stanisław Szczepanowski) created between 1669 and 1671 after the previous one (donated in 1512 by King Sigismund I the Old) was stolen by the Swedes in 1655. Sigismund's Chapel Sigismund's Chapel, or Zygmunt Chapel ("Kaplica Zygmuntowska"), adjoining the southern wall of the cathedral, is one of the most notable pieces of architecture in Kraków and perhaps "the purest example of Renaissance architecture