This Roman Theater is supposed to be built in the 1st century. It occupied much larger space than the one that is visible today, as archeological research has not yet been completed. The theater space was divided into a scene where actors, orchestras played and auditoriums which may have up to 5,000 spectators. The remains of the foundations of the stage building and parts of the semicircular auditorium were partially reconstructed. Below the theater is the building of the former German gymnasium, where since 1930 the Archeological Museum of Istria has been housed.
