Viewed from the cultural, historical, tourist or architectural point of view, one of the most impressive features of Čakovec, the center of Međimurje County, is the Palace of the Old Town of Zrinski, which with its walls and park Zrinski Park is a symbol of identity and tradition of Međimurje County. The palace belongs to the main historical style of northern Croatia, the Baroque, but in addition to the Baroque features, the palace also preserves elements of late Gothic. Throughout history, the palace has undergone various conversions, reconstructions, additions, war destruction, natural disasters, which left a mark on the structure itself. Today, the Palace is a monumental complex of zero category, and it houses the Museum of Međimurje, with several departments (archaeological, ethnographic, cultural-historical, historical, and art gallery) which contains a total of more than 20,000 exhibits. This paper presents a part of the issue of historic buildings, the importance of preserving the architectural heritage and the importance of continuous maintenance of construction and cooperation of all participants in the construction of historic buildings, especially buildings protected by the Conservation Offices.