The Territorial Building was built in 1925 and served as the administrative building of the Territory of Hawai'i. It was featured in several episodes of the television series Hawai'i 5-0
as a temporary state police headquarters.
The Territorial Building on 425 South King Street in downtown Honolulu, Hawai'i was a government building of the Territory of Hawai'i and is today the home of the Attorney General of Hawai'i. Built in 1925 by the architect Arthur Reynolds, the Territorial Building is in the classical revival arhitectural style. It is adjacent to Ali'iolani Hale and within walking distance of the Hawai'i State Capitol, Hawai'i State Library, Iolani Palace and Kawaiahao Church. In 1978, the Territorial Building was placed on the National Register of Historic Places and declared a National Historic Landmark.