This image shows, according to the caption on the card itself, a Scenic Vacation Wonderland, believed to be in Wisconsin, as the card was published there.
E.C. Kropp Co., Milwaukee, Wis.
There is no description on the back of this card, only the statement “This is an ECKCO-CHROME Reproduction.” This spelling is present on other postcards of the era, but it is not clear what it refers to unless it was intended to say “Ekta-chrome”, which was a kind of film.
This card likely dates from the 1950s.