What exactly is Gwanghwamun, the royal gate BTS just introduced to the world?

Sometime Saturday, you may find yourself watching a livestream of seven singers performing on a massive outdoor stage in central Seoul, framed by a towering wooden gate and the sweeping tiled rooftops of a palace behind it. You might wonder: What, exactly, is that thing? What you're seeing is Gwanghwamun, historically the main entrance to Gyeongbokgung — the grand royal palace of the Joseon era, which ruled Korea from 1392 until the Japanese annexation of 1910. It is, by most reasonable measures

By The Korea Herald