Question: The Putnam-Parker Block are historic structures located in downtown Davenport Iowa United States. The property is three buildings that take up the south half of block 43 in what is known as LeClaire's First Addition. The main facade of the structures face south along the north side of West Second Street. They were listed on the National Register of Historic Places in 2011. 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