The store was called Marubutsu, and the PARCO name appeared in 1969, after the original company was bought by the railway company Seibu. Here's a bird's-eye night view of the surrounding area, featuring the Seibu and PARCO billboards, photographed from the Sunshine 60 observatory.
EXIF info:
Nikon D90
Lens: VR 18-55mm F/3.5-5.6G
Focal Length: 24mm
Aperture: F/7.1
Shutter Speed: 1s
ISO Sensitivity: ISO 200