For the 4 islands in Manila Bay that used to be the Manila Bay Defense Forts, Corregidor-Ft. Mills, Caballo-Ft. Hughes, Fraile-Ft. Drum, Carabao-Ft.Frank.
Zf953. This and the next two surrender photos (in May of 1942) are said to have been staged by the Japanese for their cameras to record. We are seeing the West entrance here.
Zf952. Here we see a video capture of the West entrance during wartime but before it was heavily damaged. Note the difference between this photo and the next one.