United States District Court for the District of Hawaii

The Prince Kūhiō Federal Building, formally the Prince Jonah Kūhiō Kalanianaʻole Federal Building and United States Courthouse, is the official seat of the United States federal government and its local branches of various agencies and departments in the state of Hawaiʻi. Its address is 300 Ala Moana Boulevard, Honolulu, Hawaii 96850.The building was completed in 1977 with a total of 929,857 square feet (86,386.5 m2) of working space. It houses the United States District Court for the District of Hawaii, the United States Attorney for the District of Hawaii, the United States Court of Appeals for the Ninth Circuit (Honolulu Division), the offices of Hawaii's U.S. Senators, the offices of Hawaii's U.S. Representatives for Hawaii's 1st congressional district and Hawaii's 2nd congressional district, and branch offices of the United States Secret Service, United States Probation and Pretrial Services System, Department of Homeland Security, United States Department of Justice, Central Intelligence Agency, Federal Bureau of Investigation, Internal Revenue Service, Department of Veterans Affairs, among other entities.The building was named after Prince Jonah Kūhiō Kalanianaʻole, heir to the throne of the overthrown Kingdom of Hawaiʻi, who served as Republican territorial delegate to the United States Congress from 1903 through 1922. It was built on part of the former US Army Fort Armstrong, which was named for Samuel C. Armstrong (1839–1893), son of Hawaiian missionaries. Across Ala Moana Boulevard is the Aloha Tower at the Honolulu harbor. Other parts of Fort Armstrong became a container terminal for military supplies.The Prince Kūhiō Building was constructed to replace the aging Federal Court, Customs House and Post Office building fronting ʻIolani Palace and adjacent to Aliʻiōlani Hale which had been built in 1922 and expanded in 1931. After being mostly vacant, the old building was renovated and put up for sale. The old building was given back to the state of Hawaiʻi and was renamed the King David Kalākaua Building in December 2003.Construction of the Prince Kūhiō Federal Building was not without controversy. The General Services Administration wanted a simple tall office tower, while local architects argued for a building more appropriate to Hawaii. Statutes provided that all buildings between the shoreline and the foot of Punchbowl Crater could not be taller than the Hawaiʻi State Capitol. The federal government, not legally limited by local statutes, defied the statutes and constructed the building as the tallest structure in the path of the capitol building's view of the shoreline. The complex includes ten stories of offices (including a penthouse level), connected by an enclosed bridge to a six-story courthouse building (including basement).The Prince Kūhiō Federal Building was designed by Joseph G.F. Farrell's firm Architects Hawaii. Other government buildings designed by the firm include the capitol building of Palau, which opened in 2006. The building was selected for $121 million of renovations as part of the American Recovery and Reinvestment Act of 2009. The plan is to make the building more efficient by upgrading its mechanical, electrical, fire-safety, and plumbing systems. It had already been cited as an efficient building by the Energy Star program. Traces of asbestos were discovered during the first phase. The second phase of construction was approved in March 2011.

The Honolulu Sailor's Home is a non-profit lodge for international merchant seamen. The home was incorporated in May 1855 with a lot obtained by a grant from the Kingdom of Hawaii. Originally located on Bethel Street adjacent to the Port of Honolulu, it is now located one block away at 707 Alakea Street

Aliʻiōlani Hale is a building located in downtown Honolulu, Hawaiʻi, currently used as the home of the Hawaiʻi State Supreme Court. It is the former seat of government of the Kingdom of Hawaiʻi and the Republic of Hawaiʻi. Located in the building's courtyard is the famed gold-leaf statue of Kamehameha the Great.

The King David Kalakaua Building in Honolulu, Hawaii is a government building formerly known as the U.S. Post Office, Customhouse, and Courthouse. It was the official seat of administration in the Territory of Hawaii and state of Hawaii for the United States federal government.

Downtown station is a planned Honolulu Rail Transit station in Honolulu, Hawaii. It is part of the fourth HART segment, scheduled to open in 2031.The Hawaiian Station Name Working Group proposed Hawaiian names for the twelve rail stations on the eastern end of the rail system (stations in the Airport and City Center segments) in April 2019. The proposed name for this station, Kuloloia (also Kuloloio), is an ancient place name and refers to a sandy beach on the shore of Kou, a favored residence of the chiefess Nāmahana.

The Supreme Court of Hawaii is the highest court of the State of Hawaii in the United States. Its decisions are binding on all other courts of the Hawaii State Judiciary. The principal purpose of the Supreme Court is to review the decisions of the trial courts in which appeals have been granted. Appeals are decided by the members of the Supreme Court based on written records and in some cases may grant oral arguments in the main Supreme Court chamber. Like its mainland United States counterparts, the Supreme Court does not take evidence and uses only evidence provided in previous trials. The court meets in Aliʻiōlani Hale in Honolulu.

The Hawai`i Maritime Center was the principal maritime museum in the State of Hawai`i from 1988 until it closed in 2009. Located at Pier 7 of Honolulu Harbor east of Aloha Tower, the center was a campus of the Princess Bernice Pauahi Bishop Museum. The Hawai`i Maritime Center was built on what once was the private boathouse of King David Kalakaua and was home to the only four-masted, full-rigged ship in the world called the Falls of Clyde. The Falls of Clyde was built in 1878 for the oil industry and is a National Historic Landmark. Also docked at the Hawai`i Maritime Center was the voyaging canoe Hokule`a, a scientific research vessel of great importance to native Hawaiian culture. Due to prevailing economic conditions, the Hawai'i Maritime Center was closed to the public effective May 1, 2009. In December 2017, the Bishop Museum transferred its lease between the Maritime Center and the State of Hawaii to a third party, and ceased operating the Center. Plans for its future are unknown.

Falls of Clyde is the last surviving iron-hulled, four-masted full-rigged ship, and the only remaining sail-driven oil tanker. Designated a U.S. National Historic Landmark in 1989, she is now a museum ship in Honolulu, but her condition has deteriorated. She is currently not open to the public. In September 2008, ownership was transferred to a new nonprofit organization, the Friends of Falls of Clyde. Efforts to raise $1.5 million to get the ship into drydock did not succeed. In November 2021 HDOT accepted a bid from Save Falls of Clyde – International (FOCI) to transport the ship to Scotland for restoration.

Several Kamehameha statues honor the monarch who founded the Kingdom of Hawaii.

The Kamehameha I statue (Honolulu cast) is an outdoor sculpture by American artist Thomas Ridgeway Gould, erected in 1883. The first cast in the series, Kamehameha I statue (original cast), is located in North Kohala on the island of Hawaiʻi. The second cast stands outside the Aliʻiōlani Hale government building in Honolulu, located on the island of Oahu. Made of cast brass, it depicts Kamehameha I and has become a recognizable cultural symbol for the Hawaiian Islands.

The Royal Brewery is a historic former brewery in Honolulu, Hawaii. It features a distinctive decorative facade and is the oldest remaining structure associated with brewing in the state of Hawaii.

The Kakaʻako Pumping Station in Honolulu, Hawaii was designed by architect Oliver G. Traphagen in the Richardsonian Romanesque style. He also designed many such bold stone public works buildings in Duluth, Minnesota. Built in 1900, the pumping station features large arched windows, exterior walls of local lava rock, roofs of green tile, and a smokestack 76 feet tall. It was the first sewerage pumping station in Honolulu, Hawaii, designed to address the serious sanitation problems of the rapidly growing city. It is located on an acre of land between the Kewalo Basin and Downtown Honolulu, at Ala Moana Boulevard and Keawe Street. The Ala Moana Pumping Station took over its functions in 1940, and it has remained vacant for many years. Now under the jurisdiction of the Hawaii Community Development Authority, it is slowly being restored by the nonprofit Hawaii Architectural Foundation.Oliver G. Traphagen also designed the "bright and airy" Moana Hotel on Waikiki Beach.