Please answer the following question: The Warrior Ridge Dam and Hydroelectric Plant is a historic dam and power plant and national historic district spanning the Frankstown Branch Juniata River and located in Logan Township and Porter Township in Huntingdon County Pennsylvania. The district includes 5 contributing buildings and 3 contributing structures. They are the main dam power plant auxiliary dam and four houses and a former church in the operators village. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Building