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. Union Bank Plaza -  Union Bank Plaza is a 157 m (515 ft) skyscraper in downtown Los Angeles California. It was constructed from 1965 to 1968 and has 40 floors. It is 20th tallest building in Los Angeles. It was the first skyscraper to be built as part of the Bunker Hill Redevelopment Project.
The answer to this question is:
Building