Given the question: Union League of Philadelphia -  The Union League of Philadelphia founded in 1862 as a Patriotic Society to support the policies of Abraham Lincoln is today a private members-only club. Founded by Philadelphia society it remains a bastion of the elite; among its 3300 members are leaders in business academia law medicine politics religion and the arts. Members gather to socialize dine network attend events exercise and relax in the 1856 Second Empire-style building. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
The answer is:
Building