The Croatian National Theater in Zagreb city center is the oldest theater institution in Croatia, settled in a building that was officially opened on October 14, 1895. The building dominates by a large square opposite the Music Academy, the University of Zagreb and the Museum of Arts and Crafts. The Croatian National Theater (HNK) is a neo-baroque building, which was designed by Ferdinand Fellner, an Austrian architect, and Hermann Helmer, a German architect. The HNK building has always been the site of gravitation of the city, one of the most important points in the urban fabric of the city, after the main city square. A friendly and well-maintained environment with an open-air park around the HNK, calls for attention and respect, just as the open drape of the stage does. The HNK's stage is surrounded by the lodges and prater with 750 seat places for art lovers. The Croatian National Theater has three ensembles: ballet, drama, and opera. There are at least 12 premieres a year here, which with reprises and foreign performances, count over 200 performances for the HNK audience in one year. The Croatian National Theater ensemble often travels over the borders of Croatia and is a member of the European organizations of the FEDORA platform, the Europe Theater Convention and Opera Europa. HNK is a producer or co-producer of many international projects, and its role in the cultural life and public space of the city of Zagreb is irreplaceable. It is difficult to find a citizen of Zagreb who did not visit the HNK at least once, and if you have stayed in one of the apartments, rooms or vacation houses in Zagreb, visit HNK as well. Day of Open Doors of the HNK is held for many years when all passersby have the opportunity to enjoy ballet and opera performances on the square in front of the building and have the possibility to see the interior of the theater. Even if you do not find yourself exactly on that day in Zagreb, it's worthwhile to study an interesting repertoire of the theater and plan a visit at https://www.hnk.hr/hr/.