In 1958 the Ministry of Transportation and Public Works held a competition for the development of Omonoia Square. Sculptor George Zongolopoulos and architect Kostas Bitsios were awarded the project. Their proposal included a circular water system in the middle of which would be placed Zongolopoulos’ sculpture "Poseidon". The square was redesigned although in the end without the placement of the sculpture. Eventually, the sculpture was installed permanently in 2014 outside the Milken School of Public Health at The George Washington University, Washington D.C. in the United States. The fountain of Omonia became a famous city landmark and the Square itself was depicted many times in Greek movies of the period.