The Omega Man was filmed in Los Angeles in the United States of America.
Department of Water and Power
In movie
Scene where Neville stops to check his map and make a recording while out on a supply run.
Real
Scene was shot The John Ferraro Building was constructed in 1965 to consolidate operations for the Los Angeles Department of Water and Power. It is a 17-story building designed by A.C. Martin & Associates in the Corporation-International Style. The pond surrounding the building is part of building's air conditioning and heating systems, reducing power usage in the summer and allowing the building to be heated without a boiler in the winter. The concrete slabs extending past the windows act as shades to also help keep the building cool.
Los Angeles