The National Library and National Archives founded in 1974 and 1975 respectively are located in Andorra la Vella; the library holds 45,000 volumes. There are five museums in the country: a regional museum in Sispony, a local general interest museum in Excaldes-Engordany, founded in 1987; a decorative arts museum in Ordino, also founded in 1987 and housed in a 17th-century house; a science and technical museum in Encomp focusing on the history of transportation; and in Andorra la Vella, a historical museum featuring stamps and postcards.