Thanh Trì is a district of Hanoi, the capital city of Vietnam.
Thanh Trì is located on the southeastern side of Hanoi, on the western bank of the Red River. It is adjacent to Thanh Xuân District in the northwest, Hoàng Mai District in the north, Hà Đông in the west, Gia Lâm District in the east, and Thanh Oai District and Thường Tín District in the south.
Thanh Trì's terrain is mostly low-lying, gradually descending towards the southeast in the direction of flow of the Red River. The Tô Lịch River flows into the Red River within the district, and the many ponds, lakes and swamps nearby no doubt influenced the district's name; "Thanh Trì" means "blue/green pond", and the district's historical name, Thanh Đầm, means "blue/green lagoon".
Wikipedia https://en.wikipedia.org/wiki/Thanh_Trì_District
Coordinates 20°56'51.033" N 105°50'43.179" E