This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Kokyo. This photo shows Doshin Bansho former guard house inside the Otemon Great Gate of the Kokyo Imperial Palace formerly Edo Castle in Tokyo Japan took the photo and contribute my rights in the file to the public domain individuals and organizations retain rights to images in the file Doshinbansho own assumed Fg