With a history of almost 1,000 years, the Oradea Citadel is a tourist attraction that should not be missed, because it offers a special medieval experience. Its historical past, architecture, existing legends regarding certain events that marked its existence,
they will make you spend many hours discovering the story of the Citadel. Since its beginnings, the Oradea Citadel has been the core of political, military, administrative, legal and religious life, following the sanctification in 1192 of the founder of the Oradea bishopric as Saint Ladislaus Taumaturge.

The bishops' active involvement in development and the effervescent cultural life transformed the Oradea Citadel, in the 15th century, into one of the most important European centers of Humanism and the Renaissance. Thus, inside it, a large library functioned, with books brought from Italy, a Literarum asylum, a meeting place for the great humanist scholars of the time, a Catholic chapter school, where the great humanist scholar Nicolaus Olahus also studied, as well as a astronomical observer, who established the zero meridian of the maps in Oradea, for several centuries.