I never knew Huế Imperial City after sunset until it has recently been opened to guests until late at night since April 2017. Light is on at every main palaces, temples, long corridors and lanes in the Imperial City but the rest is dominated with darkness. It gives me a feeling of mystery and a little fright. Without the performances in front of Thái Hòa Palace, on the foundation of Cần Chánh Palace, at Thái Bình Palace, or at Duyệt Thị Đường theatre, etc., the Imperial City could be a too terrifying and quiet place to visit after dark.