Answer the following question: Nyholm Central Guardhouse is a historic building at Holmen in Copenhagen Denmark. It was built in 1745 as part of the Nyholm Naval Base which had been established on reclaimed land at the site in 1690. 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