There are countless concert halls in Vienna and the golden halls most admired by the Chinese people. In fact, there is also one of the four world opera houses in Vienna, known as the "World Opera Center", the Vienna National Opera House, which is the world's top performers, musicians and dancers in terms of architecture, sculpture and audio equipment. Ritual, dress appears. The traveler stood in a dusty place, ashamed of being dirty and unable to enter, and bought a set of postcards to console himself in a small bookstore at his door. Located on the Circle Avenue of Vienna's Old Town, built in the heyday of the Habsburg Dynasty, several famous architects poured their lives into the Vienna National Opera House, giving the impression of three-dimensional metal painting. The pale yellow exterior walls of Roman-style buildings with blue sky and white clouds as the background resemble copper sheets. The lines of tall and large square buildings are clear, with low-key and elegant decoration in the same color, and with tall front doors. The building has five arched gates, five arched windows and five bronze statues of opera goddess standing on the windows.