National Historic Landmark

San Francisco Bay Discovery Site

San Bruno, San Mateo County, California
Listed
May 22, 1968
Type
Site
Period
Listed
Ref No.
68000022

About this property

The San Francisco Bay Discovery Site is a marker commemorating the first recorded European sighting of San Francisco Bay. In 1769, the Portola expedition traveled north by land from San Diego, seeking to establish a base at the Port of Monterey described by Sebastian Vizcaino in 1602. When they reached Monterey, however, they were not sure it was the right place and decided to continue north. The party reached San Pedro Creek on October 31 and camped there for four nights, while scouts led by José Francisco Ortega climbed Sweeney Ridge, where they could see over the ridge toward the east, and so became the first Europeans to see San Francisco Bay on November 1. The scouts returned on November 3, and led the entire party up to the ridge on November 4. Franciscan missionary Juan Crespi noted in his diary, "from the summit of a peak we beheld the great estuary or arm of the sea." After seeing the immense bay to the east, and having learned from the scouts that further progress to the north would be blocked by the Golden Gate, the party turned southeast and descended toward the bay. Sweeney Ridge is located in northern San Mateo County and is now a part of the Golden Gate National Recreation Area. The site is both a California Historical Landmark and a National Historic Landmark. The spot chosen for the marker is somewhat arbitrary, as the precise location where Portola's party reached the summit of the ridge is not known. The landmarked area encompasses two of the highest knolls on the ridge. As of October 2020, the marker has been vandalized, with Portolà’s name and the date of the discovery chiseled away.

Location

San Bruno, San Mateo County, California
37.60345, -122.45594

Categories

EXPLORATION/SETTLEMENT
National Register nomination ›
Sources

Property data from the National Register of Historic Places, National Park Service (public domain).

Description adapted from Wikipedia under the Creative Commons Attribution-ShareAlike 4.0 International License.

Unlimited access

Everything a full report reveals about San Francisco Bay Discovery Site

This page lists San Francisco Bay Discovery Site. A full Aubrey report for an address near it pulls together this listing alongside battlefield records, land patents, and every other historical record within a chosen radius:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
First month just $5.99, then $11.99 a month. Unlimited locations, cancel anytime.

Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.

Start your San Francisco Bay Discovery Site report
Or see a real report first

Nearby Historic Sites

Sanchez Adobe Park
Listed
2.3 mi
Southern Pacific Depot
Industrial
3.9 mi
Kohl Mansion
Industrial
4.2 mi
Whifler, William A., House
Industrial
4.4 mi
Martin Building
Industrial
4.4 mi

Questions about this property

When was San Francisco Bay Discovery Site listed on the National Register?

San Francisco Bay Discovery Site was listed on the National Register of Historic Places on May 22, 1968.

What type of historic resource is San Francisco Bay Discovery Site?

San Francisco Bay Discovery Site is classified as a site in the National Register of Historic Places.

Is San Francisco Bay Discovery Site a National Historic Landmark?

Yes. San Francisco Bay Discovery Site has been designated a National Historic Landmark (NHL), the highest level of federal recognition for historic properties in the United States.

What is the period of significance for San Francisco Bay Discovery Site?

The period of significance for San Francisco Bay Discovery Site is recorded as the listed era.

Can I research the history near San Francisco Bay Discovery Site?

Yes. Aubrey Research reports search National Register listings, battlefield records, land patents, and other primary historical sources within any radius of a US address. A report for an address near San Francisco Bay Discovery Site will include this listing and all other historical records in the area.

More in San Mateo County

Historic places, battles, and census history across San Mateo County.

Explore San MateoCounty ›

More historic places in California

Browse all historic places in California.

View Californiahistoric sites ›

Conflict records

Explore 19,000+ military engagements across American history.

Browse US conflicts ›

California history

Colonial settlement, territorial period, and statehood narrative.

Californiahistory ›

Research the history near this site

An Aubrey US report for an address near San Francisco Bay Discovery Site will include this listing alongside battlefield records and other historical sources within your chosen radius.

Research your locationView a free sample report