The Daniel Webster Law Office and Library also known as Daniel Webster Law Office is a National Historic Landmark on Careswell and Webster Streets in Marshfield Massachusetts.The office was built in 1832 for Daniel Webster and was added to the National Historic Register and also designated a National Historic Landmark in 1974.The National Park Service described the site's significance in 1974 as:Statesman legal scholar and orator Daniel Webster championed the Union throughout his multifaceted career.  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?
A:
Building