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El Palo Alto is a coast redwood (Sequoia sempervirens) tree located in El Palo Alto Park on the banks of San Francisquito Creek in Palo Alto, California, United States. El Palo Alto, roughly translated, means the tall tree in Spanish.

El Palo Alto is 110 feet (33.5 meters) in height (compared to 134.6 feet or 41 meters in 1951), 90 inches (2.3 meters) in diameter, and has a crown spread of 40 feet (12 meters).

The tree is California Historical Landmark No. 2 (number 1 is the custom house in Monterey). It is recognized by the National Arborist Association and International Society of Arboriculture for its historical significance as "a campsite for the Portola Expedition Party of 1769"; being frequented by the Costanoan/Ohlone Indians; and for its use as a sighting tree by surveyors plotting out El Camino Real. The tree is depicted on the city of Palo Alto's official seal and on the seal of Stanford University. It is presumably the origin of the city's name.

The tree dates to approximately year 940 and is reportedly healthier today than 100 years ago.^[1] El Palo Alto originally had twin trunks, but an 1887 flood in the San Francisquito arroyo tore off one of the two.

A plaque at the base of the tree bears the following inscription:

Under this giant redwood, the Palo Alto, November 6 to 11, 1729, camped Portola and his band on the expedition that discovered San Francisco Bay, this was the assembling point for their reconnoitering parties. Here in 1774 Padre Palou erected a cross to mark the site of a proposed mission (which later was built at Santa Clara). The celebrated Pedro Font topographical map of 1776 contained the drawing of the original double trunked tree making the Palo Alto the first official living California landmark.

1. ^ City of Palo Alto. El Palo Alto Historic Report

• List of famous trees

• City of Palo Alto's Heritage Trees
• Stanford University History: Prologue
• Historical photographs of San Francisquito Creek, including El Palo Alto
• City Arborist Report, 1999
• Maps and aerial photos Coordinates: 37.44727° -122.17014°
  • Street map from Google Maps or Yahoo! Maps
  • Topographic map from TopoZone
  • Aerial image or topographic map from TerraServer-USA
  • Satellite image from Google Maps or Microsoft Virtual Earth

	Leland Stanford Junior University
Places	Arboretum • Arizona Cactus Garden • Cantor Center for Visual Arts • El Palo Alto • Frost Ampitheater • Green Library • Hoover Tower • Stanford Mausoleum • Stanford Memorial Church • Stanford Research Park • Stanford Shopping Center •