Roman Catholic Archdiocese of Agaña

Dulce Nombre de Maria Cathedral Basilica (Spanish: Catedral Basílica del Dulce Nombre de María) is a Roman Catholic cathedral in Guam. It is the seat of the archbishop of the Roman Catholic Archdiocese of Agaña. It is located on the site where the island's first Catholic church was constructed in 1669, under the guidance of Father Diego San Vitores. The present building looms above the palm trees and is a familiar landmark in downtown Hagåtña. The basilica enshrines the image of Santa Marian Kamalen, Patroness of Guam.

The Plaza de España (Spain Square) located in central Hagåtña, the capital of the United States territory of Guam, was the location of the Governors Palace during the island's long period of Spanish occupation. Most of the palace was destroyed during the shelling of Hagåtña during the reconquest of Guam in World War II. There are three structures still standing including the three-arch gate to Almacen (Arsenal), the azotea or back porch, and the Chocolate House. The plaza was listed on the National Register of Historic Places in 1974.

The Guam Congress Building, also known as the Guam Legislature Building, is the seat of the Legislature of Guam and is located in Chalan Santo Papa in Hagåtña, Guam. It was built in 1949 by Pacific Island Buildings and of Brown & Root Pacific Bridge & Maxon. It has served as a capitol and as a courthouse building. It is a Modern Movement-style building that was listed on the U.S. National Register of Historic Places in 2007. It is significant for its role in the history of the Chamorro people and their effort to end the dominant military rule of the United States Navy in 1950. The legislature moved to a new location in 1989 and two wings of the building were taken down; the building was then converted to house government offices. In December 2016, a restoration and energy efficiency upgrade of the Congress Building was completed, allowing the Legislature of Guam to reconvene in the building from January 2017 onwards, returning Senators to the historic structure full-time after a 27-year absence.

The Guam Museum, formally the Senator Antonio M. Palomo Guam Museum & Chamorro Educational Facility, is a museum focusing on the history of Guam, a U.S. territory in Micronesia. A permanent building to house the museum's collection opened in Hagåtña on November 4, 2016. The Guam Museum had been housed in temporary locations since World War II.

Academy of Our Lady of Guam (AOLG) is an all-girls private Catholic high school located at 233 Archbishop Felixberto C. Flores Street in Hagåtña, Guam, United States. AOLG, Guam's sole all-girls high school, has an average yearly enrollment of 400 students. In 2004 it was awarded the highest medal of recognition from the Archdiocese of Agaña. The school is accredited by the Western Association of Schools and Colleges. The school has several clubs and organizations: Student Council, National Honor Society, Model United Nations, Mock Trial, and National Forensics League.

The Mesa House, or Dr. Mesa House, is a historic house on Maxwell St. in Hagåtña, Guam. Built in 1930, it is relatively rare as a pre-World War II house with ifil wood construction. The building is two stories on a 12.6 by 8.4 metres (41 ft × 28 ft) plan. The first floor is concrete, while the second floor is ifil wood in both framing and flooring. The roof is framed in non-ifil wood and covered in corrugated metal. Its colonial-era architecture is exemplified by exterior stairs and porch elements. The house is notable for surviving not just World War II, but also termite infestations and typhoons that have regularly devastated the island. The house was listed on the National Register of Historic Places in 1985.

The Hagåtña River is a river in the United States territory of Guam. Hagåtña, the capital of Guam, is located at the mouth of the river and associated wetlands form the eastern boundary of the city. The river mouth is depicted on both the Seal of Guam and Flag of Guam. The river used to substantially parallel the shoreline, with the river emptying into the sea west of the current Paseo de Susana and marina. However, following the devastation of the U.S. bombardment during the 1944 battle, U.S. Navy Seabees rerouted the river to its current, more direct course to the sea. This resulted in landmarks such as the Agana Spanish Bridge no longer having water flow beneath it. The most common fish found in the river is the Eastern Pacific Bonito. Other nearby bodies of water include, the Hagåtña Boat Channel, Hagåtña Bay, Agana Swamp and Asan Bay.

Guam Public Library System (Chamoru: Sisteman Laibirihan Pupbleko Guåhan) is the public library system of the United States territory of Guam. The main library is the Nieves M. Flores Memorial Library at 254 Martyr Street in the village of Hagåtña.

Chief Quipuha Park is located on the Paseo de Susana peninsula, in the north of the city of Hagåtña, in the United States territory of Guam . Like the rest of the peninsula, the area was created after World War II from bulldozed debris from the ruined city. It is named for Kepuha (Quipuha), the chief who gave land to Diego Luis de San Vitores for the first European settlement on the island at Hagåtña.

The Legislature of Guam (Chamorro: Lehislaturan Guåhan) is the law-making body for the United States territory of Guam. The unicameral legislative branch consists of fifteen senators, each serving for a two-year term. All members of the legislature are elected at-large with the island under one whole district. After the enactment of the Guam Organic Act in 1950, the First Guam Legislature was elected composing of 21 elected members. Today, the current fifteen-member 37th Guam Legislature (Chamorro: I Mina' Trentai Siette Na Lehislaturan Guåhan) was elected in November 2022. The next election is scheduled for November 5, 2024.

The Agana Spanish Bridge (Spanish: Puente Español de Agaña) is a stone arch bridge built in 1800 in Hagåtña, Guam (formerly known as Agana), during the administration of Spanish governor Manuel Muro. It is the only surviving Spanish bridge in Hagåtña, which is the capital of the United States territory of Guam. Also known as Sagon I Tolai Acho, it is located at the southwest corner of Aspenall St. and Rte. 1 and was listed on the U.S. National Register of Historic Places in 1974. Originally it crossed the Hagåtña River, which had been diverted, and it connected the San Ignacio district to the Bilibic district. The bridge was damaged in bombardment during the U.S. recapture of Guam from Japan in 1944. The Hagåtña River was rechanneled elsewhere, later; the site became a park and the bridge was restored in 1966. The restoration included replacing portions of the bridge by a "stylized concrete wall". A rectangular cement pond area replaced the former riverbed under the bridge.

The Agana Shopping Center is a shopping mall located in Hagåtña, the capital of the United States territory of Guam. Opening in 1978, the mall is one of numerous malls on Guam. It is owned by Philippines-based retail firm SM Prime since 2003. Main competitors include Micronesia Mall in Dededo and Guam Premier Outlets in Tamuning. The shopping center offers a diverse mix of shops from unique local stores to notable chain restaurants such as Pizza Hut, Taco Bell, Panda Express, Subway, Wendy’s, Pretzelmaker, Cinnabon, Chatime, Jollibee, and Vons Chicken which is South Korea-based chain famous for their Korean fried chicken. Local restaurants can be found throughout the mall including Dr. Kabob, Capricciosa, Sushi Rock, Poke Seven, Snowberry, Chan's Hotdog, and Fizz & Co., the only soda shop on the island. There are also Asian grocery stores, Seoul Mart and Tokyo Mart Express, which offer Korean and Japanese products. Retail stores and services in the mall include Ross Dress for Less, SM Island, Vitamin World, Primo Surf, Vince Jewelers, Miniso, Pet Express, Docomo Pacific, IT&E, Jeans Warehouse, Hair Town, Hollywood Nails, Ideal Vision Center, Express Care, Photoshoot Studio, and more. The second floor of the mall also features its Agana Marketplace, an urban bargain place that includes more small local retail shops offering accessories, clothing, bags, and more.