Kian Un Keng Shrine or spelled Kuan An Keng Shrine (Thai: ศาลเจ้าเกียนอันเกง; Chinese: 建安宮; pinyin: Jiàn'ān gōng), known internationally as Guanyin Shrine (ศาลเจ้าแม่กวนอิม), is an ancient Chinese joss house in Bangkok, located on the western bank of Chao Phraya River, Wat Kanlaya Subdistrict, Thon Buri District, Thonburi side in the area of Kudi Chin community close to other places of worship including Wat Prayurawongsawat, Wat Kalayanamitr and Santa Cruz Church with Bang Luang Mosque.

It's one of the oldest shrines in Thonburi and Thailand by King Taksin and brought the Goddess Guanyin statue to be enshrined here.

During the reign of King Rama III, the Hokkienese therefore demolished both shrines and rebuilt with Chinese courtyard architecture along with brought the Guanyin statue enshrined instead since then.

[4] It is currently under the care of Simasatian (or Shēn, 沈) and Tantiwetchakun (or Chen, 陳) families, which are their offspring.

That is a ceremony similar to Loi Krathong in order change one's bad fortune for the people who make merit here.