From the record
“Fort Ruger is a fort on the island of that served as the first military reservation in the Territory of Hawaii. Ruger and built in and around Diamond Head Crater, the fort was established by the United States for the purpose of defending the harbor of its newly annexed territory.”
Wikipedia article Fort Ruger, CC BY-SA 4.0.
One of 154 National Register listings published here for Honolulu County · listed in 1983 · category: District · built in 1906.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service


