Answer the following question: Romfelt Plaza (Doamna Ghica Plaza) is a residential building project in Bucharest. The complex is composed of nine buildings with a total surface of 132000 m2 the tallest tower having 24 floors and a height of 78 m. 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