Project Babylon was the code name of a project with unknown objectives to build a series of superguns commissioned by Saddam Hussein during his rule as President of Iraq.
The design was based on research from the 1960s Project HARP led by the Canadian artillery expert Gerald Bull. There were most likely four different devices in the program.
The project began in 1988 and was halted in 1990 after Gerald Bull was assassinated, and parts of these superguns were seized in transit around Europe. The components that remained in Iraq were destroyed by the United Nations after the 1991 Gulf War. Because it is set in 1990s Iraq, the weapon is the subject of the story Land of the Two Foes.