Given the question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Presidio of San Diego - El Presidio Real de San Diego (Royal Presidio of San Diego) is a historic fort in San Diego California. It was established on May 14 1769 by Commandant Pedro Fages for the Spanish Empire. It was the first permanent European settlement on the Pacific Coast of the present-day United States. As the first of the presidios and Spanish missions in California it was the base of operations for the Spanish colonization of California.
The answer is:
Building