Allegheny Observatory was created in 1912.
Undaunted The Forgotten Giants of the Allegheny Observatory - 2012 was released on: USA: 18 April 2012 (limited) USA: 9 May 2013 (TV premiere)
Allegheny Furnace was created in 1811.
Allegheny College was created in 1815.
Allegheny Technologies was created in 1996.
Allegheny Moon was created in 1956.
Allegheny Cemetery was created in 1844.
Allegheny Uprising was created in 1939.
Allegheny Energy was created in 1925.
Allegheny Arsenal was created in 1814.
Allegheny Market House was created in 1863.
Allegheny High School was created in 1904.
Allegheny County Mortuary was created in 1903.