Famous historic tower in Yueyang, Hunan, overlooking 洞庭湖 dòng​tíng​hú; one of the three great towers of southern China alongside 黄鹤楼 huáng​hè​lóu and 滕王阁 téng​wáng​gé

(bound form) a type of writing or book used for recording events, such as a travelogue or a diary