Silo: Generic/unknown
Resource and Industrial
Tower: Clearance
Tower: Communication
Tower: Control
Tower: Fire
Tower: Lookout
Building: Barn/machinery shed
Other
Building: Cabin
Building: City hall
Government and Institutional
Building: Coast guard station
Transportation
Building: Dome
Building: Electric power station
Building: Fire station
Emergency
Building: Fish hatchery
Building: Grain elevator
Building: Kiln (tobacco)
Building: Religious building
Cross: Generic/unknown
Parabolic antenna: Radar
Ruins: Generic/unknown
Culture
Shrine: Generic/unknown
Building: Other