Father Junipero Serra, built what in california?

Mission San Carlos Borromeo de Carmelo

Explanation:

Father Junipero Serra is known as the Father of California's Spanish missions. Junipero Serra moved to the area that is now Monterey in 1770, and founded Mission San Carlos Borroméo de Carmelo. He remained there as "Father Presidente" of the Alta California missions.

Father Junipero Serra is known as the Father of California's Spanish missions. He personally founded nine of California's 21 Spanish missions and served as president of the California missions until his death.