More popularly known as Fort Apugan, the historic Fort Santa Agueda is the sole fortification of the Spanish era that survives in Agana. Fort Santa Agueda rests atop a bluff overlooking Guam's capitol city. Spanish, American, and Japanses forces all made use of this fortification dating back to the early 1800's.
Spanish documents mention a gun salute being fired from the fort.
Other records show that the citadel later functioned as a signal station for the American Administration in the 1930's. Later Fort Soledad became the site of a gun emplacement for Japanese forces. This rectangular-shaped fort is a popular vista for sightseers and still acts as a lookout point, but in the form of a public park. Built in the early 1800's, Fort Nuestra Senora de la Soledad, or Our Lady of Solitude, is one of many forts that quarded Guam's busiest southern anchorage when the Manila Galleons sailed. These renowned ships would cruise into Umatac bay to restock their supplies keeping the harbor routinely active.