Petaluma   

California is the most populous state of the United States. Located on the Pacific coast of North America, it is bordered by Oregon, Nevada, Arizona and Mexico. California is known for its pleasant climate and ethnically diverse population. The name California is most commonly believed derived from a storied paradise peopled by black Amazons and ruled by Queen Califia.

Petaluma is a city with a well preserved historic center in Sonoma County, California, in the United States. As of the 2000 census, the city had a total population of 54,548 inhabitants. Petaluma Adobe State Historic Park contains the Rancho Petaluma Adobe, a National Historic Landmark. It was built beginning in 1836 by General Mariano Guadalupe Vallejo, then Commandant of the San Francisco Presidio.
 
The adobe is considered one of the best preserved buildings of its era in Northern California. Petaluma is a transliteration of the Coast Miwok phrase peta luuma which means hill backside and probably refers to Petaluma's proximity to Sonoma Mountain.According to the United States Census Bureau, the city has a total area of 36.0 square kilometers.