Agaña
The Agana-Hagåtña Pillbox is a former Japanese defensive fortification in Hagåtña, Guam. It is a six-sided reinforced concrete structure, located a short way above the high-tide line on the west side of the Paseo de Susana, a small peninsula jutting north from the village center. There is another wall providing cover for the entrance on the land side. The interior is divided into two chambers, each of which has a gun port. The structure was built by Guam's Japanese defenders during their occupation of the island (1941–44) in World War II.