The Louis and Ellen Olson House a Craftsman style mansion built in 1903 is located near downtown Enumclaw King County Washington. It has been listed on the National Register of Historic Places since 1984. The mansion is currently a private residence. 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?
Answer:
Building