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. 50 California Street - 50 California Street is a 148 m (486 ft) 37-story office tower completed in 1972 at the foot of California Street in the financial district of San Francisco California. There is a plaza located at the foot of the building. The building is owned and managed by the Shorenstein Company.
Answer:
Building