The document describes two locations in Halong Bay, Vietnam - Dinh Huong Islet and Trinh Nu Grotto. Dinh Huong Islet, also known as Incense Burner Islet, resembles an incense burner and is considered a holy site. Trinh Nu Grotto features a stone statue of a girl and is associated with a love story where a fisherman's daughter turns to stone after being exiled and her lover searches for her and also turns to stone. Tourists find the sites romantic and still hear the echoes of the lovers' calls.