Please answer the following question: The Gothic Revival Church of St. Nicholas (German: St.-Nikolai-Kirche) was formerly one of the five Lutheran Hauptkirchen (main churches) in the city of Hamburg. The church lies now in ruins with only its spire remaining serving as a memorial and an important architectural landmark. 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