Please answer the following question: Hiram M. Chittenden Locks - The Hiram M. Chittenden Locks is a complex of locks that sits at the west end of Salmon Bay part of Seattle Washington's Lake Washington Ship Canal. They are known locally as the Ballard Locks after the neighborhood to the north. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Building