In Northern Croatia, the first castles were built in the area of Hrvatsko zagorje at the beginning of the 17th century, where is the highest density of castles. Castles that were built until the end of the 17th century were built according to the characteristics of the Renaissance and at the beginning of the 18th century they were built as an inspiration for Baroque architecture. Also, looking at the architecture of all castles in Northern Croatia, the affirmation of classicism can be seen in some castles, and the appearance of romanticism and historicism can be seen in the restoration of castles from the 19th and 20th centuries. The castles of Northern Croatia have a rich history and a distinct cultural and historical value, for that reason they are an important part of the tourist offer of continental Croatia. One of the most famous castles in Northern Croatia is the Trakošćan castle, which is today completely intended for tourist purposes. In 1954, the interior of the castle became a museum, and the castle park became a favorite place for walks, running and other outdoor activities, not only for locals but also for tourists from other parts of Croatia and tourists from abroad. In Northen Croatia, there is about 180 castles and manors and only a few have been valorized. The valorization of castles, manors and parks in Northern Croatia would enrich the current tourist offer and improve the development of cultural tourism as well as development of specific forms of tourism, such as; sports and recreational tourism, ecotourism and rural tourism, but also other specific forms of tourism that have only recently advanced on the continental part. Drašković Castle in Veliki Bukovac is also one of the castles owned by the Drašković family, which is very well preserved, but unfortunately most of the castle currently has no purpose. Its potential for sustainable tourism development and valorization is enormous, and its value is unquestionable. Protection and restoration of castles are of great importance because castles represent an extremely valuable cultural heritage of Croatia, which decays without adequate purpose and restoration. The development of tourism in Northern Croatia greatly affects the demographic and economic situation in that area, as well as the sustainability of destinations throughout Croatia. Exploitation of cultural and natural resources of the continental part of Croatia would reduce the concentration of tourism on the coastal belt and potentially reduce seasonality, which also benefits the sustainable development of tourism.