Looks like something from a worlds fair, dont know. Could be long gone if it were for a fair. The people look like they belong from the 40s or 50s, and judging by how many people are walking around, it just seems like something you would see from a Worlds Fair.
And I just did a quick search for 1940s world fair on google and bam, found it.
http://vandm.com/Silver-Gelatin-Phot...t=179033.aspx#