Resolution: 1/2 - Click the region of interest for enlargement.
Image rights
North gate of the citadel of Hanoi, from outside. User: Charles-Edouard Hocquard (1884-1885). This image (or other media file) is in the public domain because its copyright has expired.This applies to the United States, Australia, the European Union and those countries with a copyright term of life of the author plus 70 years.