Theater is an institution that was mentioned as far back as ancient Greece 2,500,000 years ago. The first part of the paper will present the changes in theater with the changes of different generations and their habits and needs through its basic elements. Today, the theater is so expanded that it has its own World Day. World Theater Day is a project launched by the International Theater Institute with the aim of connecting theater people. Every year, March 27 is celebrated, and on that day, an international message is read in thousands of theaters. Theater is a phenomenon that takes us to a new world, which is always different, regardless of the fact that the same play is played. As the title itself says, theater is a place of meetings, events and dialogue. Some people come to have fun, some to rest and get away from problems, some to hang out, and some just to be "seen". In the second part of the paper, the goal is to get to know the Zagreb City Theater "Comedy". The theater, which for a full seventy years, to the delight of its loyal audience, has been performing plays, musicals with which it has received the status of an excellent theater, and year after year confirms its reputation as the only musical theater in Croatia.