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Nimitz Hill is a community and census-designated place (CDP) in Piti, Guam. is located immediately west of the Nimitz Hill Annex CDP in Asan-Maina, which contains the geographic feature of Nimitz Hill. In normal conversation, the Nimitz Hill CDP and Nimitz Hill Annex CDP are often collectively referred to as "Nimitz Hill." Nimitz Hill is accessed and bounded to the south by Guam Highway 6, known as Spruance Drive in Piti. Taguag Cemetery, also known as Vicente A. Limtiaco Memorial Cemetery, lies to the southwest. Nimitz Hill CDP and the Asan Inland Unit of War in the Pacific National Historical Park form the western boundary. To the north is the uninhabited cliff area overlooking Piti Bay and Apra Harbor, with the Piti CDP below.

The Matgue River Valley Battle Area was the site of a decisive Allied victory during the 1944 Battle of Guam. The area was the scene of a major counterattack by Japanese forces against the Allied beachhead, in which the Japanese suffered extremely heavy casualties and were beaten back. After this attack, the remaining Japanese forces on the island retreated to the north. The area is located in the hills southwest of Asan Point along the Matgue River. The only surviving structural remnants associated with the battle are caves dug by the Japanese as defensive positions prior to the invasion. The site was listed on the National Register of Historic Places in 1975.

The Piti Guns or Piti Coastal Defense Guns is the site of three Vickers-type Model 3 140-millimetre (5.5 in) coastal defense guns in the War in the Pacific National Historical Park in Piti, Guam. The Japanese manufactured these Model 3 coastal defense guns in 1914. During the Japanese Occupation of Guam from 1941 to 1944, they built up defensive positions on the island. The Chamorro population was forced to work in building up these defenses, and did so here at the Piti Guns. The Piti guns were strategically placed in a village consisting mostly of rice paddies in 1944. This area was chosen to defend the beach at Asan from a possible invasion. These guns have a firing range of close to 10 miles (16 km) and were intended for use against ships and landing craft. When the United States Armed Forces came to retake the island on July 21, 1944, these guns were not fully operational. Consequently, not one of the three coastal defense guns was ever fired. However, these guns are representative of the type of weapons used by the Japanese on Guam for fortification efforts.

The Asan Ridge Battle Area was the scene of some of the heaviest fighting in the 1944 Battle of Guam, the World War II battle in which Allied forces recaptured Guam from occupying Japanese forces. The area is now part of the Asan Inland Unit of the War in the Pacific National Historical Park, and was listed on the National Register of Historic Places in 1975. The area is just inland of the Asan Invasion Beach, one of the two major beachheads established by the Allies, and has a commanding view over that area. The landforms included in this area are Chorrito Cliff, Bundschuh Ridge, and Nimitz Hill, and they were heavily fortified by the Japanese prior to the battle. Surviving elements of these fortifications include two concrete pillboxes (one unfinished), and an unfinished battery of 4-inch guns.

Nimitz Hill Annex is a community and census-designated place (CDP) in Asan-Maina, Guam. It contains the geographic feature of Nimitz Hill, and is located immediately northeast of the Nimitz Hill CDP in Piti. In normal conversation, the Nimitz Hill CDP and Nimitz Hill Annex CDP are often collectively referred to as "Nimitz Hill."

The Matgue River is a river in the United States territory of Guam. It gives its name to the NRHP-listed Matgue River Valley Battle Area of the 1944 Battle of Guam.

The Quan Outdoor Oven is a 20th-century version of a traditional hotnu, or outside oven, on the island of Guam. This oven is located on Quan family land on J. C. Santos Road, south of Santos Memorial Park in Piti. Although built out of modern materials, it follows a traditional form that has been in use on Guam since these ovens were introduced by the Spanish in the 17th century. It is a barrel-shaped structure about 2 metres (6.6 ft) long, 1.68 metres (5.5 ft) wide, and 1.37 metres (4.5 ft) wide, rising to a height of 0.64 metres (2.1 ft). The base of the structure is either poured concrete or concrete blocks. The interior of the vault is made out of heat-resistant bricks, while the exterior is finished in concrete. When recorded in 2010, its main opening was damaged. The oven was listed on the National Register of Historic Places in 2010.

Piti Bomb Holes Marine Preserve is a marine protected area comprising all of Piti Bay on the western coast of Guam, located off of the village of Piti in the Philippine Sea. The defining "bomb hole" features, named because they look like bomb craters in the reef flat, are actually natural percolation pits where fresh water filters into the shallow lagoon at a depth of 25 to 30 feet (7.6 to 9.1 m). The largest pit houses the commercial Fish Eye Marine Park tourist attraction, which includes a wooden pier to a underwater observatory and a Seawalker tour of the lagoon bottom. It is visited by more than 200,000 people annually. The Piti preserve is the most ecologically diverse of Guam's five marine preserves. The pit around Fish Eye is a popular snorkeling and recreational diving site.

The Taguag River is a river in the United States territory of Guam.

Asan-Maina (Chamorro: Assan-Ma'ina) is a village located on the western shore of the United States territory of Guam. The municipality combines the names of the coastal community of Asan with Maina, a community along the slopes of the Fonte River valley to the east. Asan was the northern landing site for United States Marines during Guam's liberation from the Japanese during World War II. Asan Beach Park is part of the War in the Pacific National Historic Park. The third community comprising Asan-Maina is Nimitz Hill Annex in the hills above Asan and Maina, which is the location of the Joint Region Marianas headquarters. Asan-Maina is located in the Luchan (Western) District.

Piti is a village located on the central west coast of the United States territory of Guam. It contains northern and eastern coastlines of Apra Harbor, including Cabras Island, which has the commercial Port of Guam and the island's largest power plants. Piti was a pre-Spanish CHamoru village and, after Spanish colonization, became the primary port town on Guam. The town was largely destroyed during the 1944 liberation of Guam and the population relocated during the wartime construction of Apra Harbor.

The Fonte River Dam is a historic dam on the Fonte River on the island of Guam. It is located in the upper third of the river's main valley, which is located between Nimitz Hill Annex and Agana Heights, and lies below and west of the Libugon scenic overlook on Nimitz Hill. The dam, built in 1910, was part of the first organized effort by the United States Navy to provide a reliable water supply to the island's major settlement, Hagåtña (formerly Agana). It is a concrete structure 150 feet (46 m) long, 24 feet (7.3 m) high, and has a 17 feet (5.2 m) base. It is almost complete obscured by jungle overgrowth. The dam was listed on the National Register of Historic Places in 2014.