Choong Ang High School is one of the old filming location site from previous dramas (i.e. Winter Sonata), but gain again its popularity from Goblin (2016-2017). Unlike the universities that is open to the public where visitors can roam around the campus, here you need to be more discreet since this is a high school. I read somewhere that they allow visitors during weekends when there are less or no students on the area.