Atascadero Historical Society Menu

History of Atascadero

Atascadero can trace its beginning to a Mexican land grant when in 1845 Governor Pio Pico granted Pedro Estrada almost 40,000 acres of the Asuncion Rancho, a good portion of which eventually made up part of the smaller 23,000 acre Atascadero Rancho.

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Upcoming Events

E.G. Lewis Potluck Dinner

March 04, 2017

Our annual membership drive-awards & special recognition evening

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2017 Colony Homes Tour

April 29, 2017

The 2017 Colony Home Tour will be held on April 29, 2017, from 1 to 4 PM.

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Visit Us Today!

Atascadero Colony House Museum is open every Wednesday and Saturday from 1pm to 4pm. City Hall Museum open Mon thru Thru 9 to 5

The museums are located at:

Colony House:

6600 Lewis Avenue

Atascadero, CA 93422

Historic City Hall: 

6500 Palma Avenue

Atascadero, CA 93422

Historic City Hall Tours

Discover the early history of Atascadero by booking a special docent led tour of the totally restored Historic City Hall Building, (circa 1914/1918 ). Tours are by appointment. Go to to schedule a tour.

To schedule a special tour: Click Here!