National Register of Historic Places

Initial Point of Boundary Between U.S. and Mexico

San Diego, San Diego County, California
Listed
September 5, 1974
Type
Site
Period
Listed
Ref No.
74000550

About this property

The Initial Point of Boundary Between U.S. and Mexico (Monument No. 258) is the westernmost boundary marker on the international boundary between the United States and Mexico and as such has since its erection marked the southwestern corner of the Continental United States. According to the 1848 Treaty of Guadalupe Hidalgo, the initial border point is set as one marine league (three nautical miles) south of the southernmost point of San Diego Bay, and the border proceeds in a straight line towards the confluence of the Colorado River and the Gila River. "Initial point of Boundary between the United States and Mexico, established by the Joint Commission, 10 October, A.D. 1849, Agreeably to the Treaty dated at the City of Guadalupe, Hidalgo, February 2, A.D. 1848. John B. Weller, U.S. Commissioner. Andrew B. Gray, U.S. Surveyor."

Location

San Diego, San Diego County, California
32.53455, -117.12290

Categories

POLITICS/GOVERNMENT
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.

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Geology
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The Civil War
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The Soldiers
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Native Heritage
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Settlement
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The Community
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Nearby Historic Sites

U.S. Inspection Station/U.S. Custom House
Industrial
5.5 mi
Station and General Office, California Southern Railroad
Industrial
8.7 mi
Brick Row
Industrial
9.7 mi
St. Matthew's Episcopal Church
Industrial
10 mi
Granger Hall
Industrial
10.5 mi

Nearby Battles

Battle of La Mesa – Detail
1847Mexican-American War
2.8 mi
Battle of San Diego Dec 1846
1846Mexican-American War
12.7 mi

Questions about this property

When was Initial Point of Boundary Between U.S. and Mexico listed on the National Register?

Initial Point of Boundary Between U.S. and Mexico was listed on the National Register of Historic Places on September 5, 1974.

What type of historic resource is Initial Point of Boundary Between U.S. and Mexico?

Initial Point of Boundary Between U.S. and Mexico is classified as a site in the National Register of Historic Places.

What is the period of significance for Initial Point of Boundary Between U.S. and Mexico?

The period of significance for Initial Point of Boundary Between U.S. and Mexico is recorded as the listed era.

Can I research the history near Initial Point of Boundary Between U.S. and Mexico?

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