EDF-GDF tower was created in 1974.
Chautauqua Tower was created in 1891.
Concord Tower was created in 2007.
Americas Tower was created in 1992.
Tower Hill Water Tower was created in 1854.
Soldiers' Tower was created in 1924.
The Ebony Tower was created in 1980.
Sutro Tower was created in 1973.
Ladd Tower was created in 2009.
Fiberglas Tower was created in 1970.
Cromwell Tower was created in 1973.
Baghdad Tower was created in 1994.
Exchange Tower was created in 1983.