sentences:  The clock was installed in July 1881 by E. Howard & Co. (headed by a co-founder of what would eventually become the Waltham Watch Company) of Boston, Massachusetts, USA.In 1970, Sapporo Clock Tower was designated an Important Cultural Property, and certified as Mechanical Engineering Heritage of Japan in 2009.The clock tower now houses a museum introducing the history of the Agricultural College and the development of Sapporo.