Presidio of San FranciscoThe Presidio of San Francisco (originally, El Presidio Real de San Francisco or The Royal Fortress of Saint Francis) is a park and former U.S. Army post on the northern tip of the San Francisco Peninsula in San Francisco, California, and is part of the Golden Gate National Recreation Area. It had been a fortified location since September 17, 1776, when New Spain established the presidio to gain a foothold in Alta California and the San Francisco Bay.
Golden Gate National Parks ConservancyThe Golden Gate National Parks Conservancy is a nonprofitcooperating association that supports park stewardship and conservation in the Golden Gate National Recreation Area—the most visited national park in the U.S. Recognized as one of the largest park partners in the country, the Parks Conservancy has provided nearly $300 million in aid to support San Francisco Bay Area parks including the Presidio of San Francisco, Crissy Field, Muir Woods National Monument, Lands End, and Alcatraz Island.
Golden Gate National Recreation AreaThe Golden Gate National Recreation Area (GGNRA) is a U.S. national recreation area protecting 82,116 acres (33,231 ha) of ecologically and historically significant landscapes surrounding the San Francisco Bay Area. Much of the park is land formerly used by the United States Army.
Golden Gate BridgeBridge in the San Francisco Bay AreaThe Golden Gate Bridge is a suspension bridge spanning the Golden Gate, the one-mile-wide (1.6 km) strait connecting San Francisco Bay and the Pacific Ocean in California, United States. The structure links San Francisco—the northern tip of the San Francisco Peninsula—to Marin County, carrying both U.S. Route 101 and California State Route 1 across the strait.
San FranciscoSan Francisco, officially the City and County of San Francisco, is the fourth-most populous city in California and the 17th-most populous in the United States, with a population of 826,079 in 2025. Among U.S. cities with a population of 200,000 or more, San Francisco is ranked first by per capita income, third by population density, and sixth by aggregate income as of 2024.
San Francisco BaySan Francisco Bay is a large tidal estuary in the U.S. state of California, which gives its name to the San Francisco Bay Area. It is dominated by the cities of San Francisco, San Jose, and Oakland. San Francisco Bay drains water from approximately 40 percent of California.
National Park ServiceThe National Park Service (NPS) is an agency of the United States Department of the Interior. The service manages all national parks; most national monuments; and other natural, historical, and recreational properties, with various title designations. The United States Congress created the agency on August 25, 1916, through the National Park Service Organic Act. Its headquarters is in Washington, D.C., within the main headquarters of the Department of the Interior.
Salt marshCoastal ecosystem between land and open saltwater that is regularly floodedSalt marsh during low tide, mean low tide, high tide and very high tide (spring tide).A coastal salt marsh in Perry, Florida, USA.A salt marsh, saltmarsh or salting, also known as a coastal marsh, is a tidal wetland in the upper coastalintertidal zone between land and sea that is regularly flooded by tides of seawater or brackish water.San Francisco PeninsulaThe San Francisco Peninsula is a geographic peninsula in the San Francisco Bay Area that separates San Francisco Bay from the Pacific Ocean. On its northern tip is the City and County of San Francisco. Its southern base is in northwestern Santa Clara County. Most of the Peninsula is occupied by San Mateo County, which is between San Francisco and Santa Clara counties.
United States ArmyLand service branch of the U.S. militaryMilitary unitThe United States Army (U.S. Army) is the land service branch of the United States Armed Forces. It is designated as the army of the United States in the United States Constitution. As a part of the United States Department of Defense, it is one of the six armed forces of the United States and one of the eight uniformed services of the United States.
AerodromeAn aerodrome, airfield, or airstrip is a location from which aircraft flight operations take place, regardless of whether they involve air cargo, passengers, or neither, and regardless of whether it is for public or private use. Aerodromes include small general aviation airfields, large commercial airports, and military air bases.
Dangerous goodsDangerous goods are substances that are a risk to health, safety, property or the environment during transport. Certain dangerous goods that pose risks even when not being transported are known as hazardous materials (syllabically abbreviated as HAZMAT or hazmat). An example of dangerous goods is hazardous waste which is waste that threatens public health or the environment. Hazardous materials are often subject to chemical regulations.*As an Amazon Associate I earn from qualifying purchases.