Mission San Borja Hot Springs
{{short description|Thermal springs}}
{{Use American English|date=March 2021}}
{{Use American English|date=March 2021}}
{{Infobox spring
| name = Mission San Borja Hot Springs
| other_name = Misión San Francisco Borga Aguas Caliente
| photo = 200912 - Overland Training trip to Baja (4169332845).jpg
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| elevation = 2,200 feet
| coordinates = {{coord|28|44|27.8|N|113|45|13|W|region:MX|display=inline,title}}
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| hot_spring_type = geothermal
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| temperature = 96°F
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Mission San Borja Hot Springs are located on the grounds of the historical Misión San Francisco Borja near the town of Rosarito in Baja California, Mexico.{{cite book |last1=Gersh-Young |first1=Marjorie |title=Hot Springs and Hot Pools of the Southwest |date=2011 |publisher=Aqua Thermal |location=Santa Cruz, CA |isbn=978-1-890880-09-5}}
History
In 1752, the Jesuit missionary, Georg Retz arrived at the springs and ordered the building of a visita or subordinate mission for Misión Santa Gertrudis, at a San Borja Adác site.{{cite book |last1=Vernon |first1=Edward W. |title=Las Misiones Antiguas: The Spanish Missions of Baja California, 1683–1855 |date=2002 |publisher=Viejo Press |location=Santa Barbara, California}} In 1758, Retz sent a group to confirm the hot water springs and cold springs at San Borja Adác.{{cite journal |last1=Wehncke |first1=Elisabet V. |last2=López-Medellín |first2=Xavier |title=Historical Water Pulses in the Central Desert Region: Following the Paths of the Missionaries' First Explorations of Northern Baja California |journal=Journal of the Southwest |date=Spring 2015 |volume=57 |issue=1 |pages=145–162 |url=https://www.jstor.org/stable/24394936 |access-date=9 April 2021}}
The hot mineral springs are located on the site of the Spanish Misión San Francisco Borja founded in 1762 by the Jesuit priest and explorer Wenceslaus Linck who worked with the local indigenous Northern Cochimí people who had been Christianized by Retz.
The rock-lined soaking pool at the source was built in the early 1880s by the missionaries.