The lecture hall of the formerly Tainan Senior High School was built in 1918. Today, it is the assembly hall of the Tainan Second Senior High School. During Japanese colonization, there were two types of secondary schools: one for Japanese students and one for Taiwanese students. Although it was a school for Japanese students, as the number of Japanese students reduced significantly during WWII, the school was temporarily merged with the Tainan First Senior High School and later renamed as the Tainan Second Senior High School. The lecture hall has an inclined roof with a strong academic style as other school buildings built during Japanese colonization. Currently, the shrine for enshring the photo of the tenno and the imperial rescript on education is preserved on the podium in the north side of the lecture hall.