Resolution: 1/2 - Click the region of interest for enlargement.
Image rights
Kính Thiên Palace in the Citadel of Hanoi. 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.