The larger domed addition, added in 1906, boasts one of the world's largest pipe borgans/b. The 14 acre headquarters complex (commonly known as the Christian Science Center) includes the church, administration offices, plaza, and reflecting pools. Model by Catherine Moats. ... Attached to the Hynes convention center and the Prudential center has made The Sheraton Boston bhotel/b one of the busiest bhotels/b in Boston. Model created by Nathan Kohrmann. ...