Wikipedia
Plasticville is a brand of plastic toy train building sold in the United States, made by formerly Philadelphia, Pennsylvania-based Bachmann Industries since 1947 (although they were first advertised in 1946). In 1984, Plasticville as well as the entire line was taken over by Kader Industries of Dongguan, China and made entirely in China.
Plasticville buildings are a simple design, made of walls that snap together, permitting them to be assembled without glue and easily disassembled again for storage. Out of the box, Plasticville buildings are usually two-tone, with building walls of one color and the doors, windows and roof molded out of a different colored plastic. With few exceptions, Plasticville buildings are styled after 1950s suburban buildings, and the product line has not changed since the late 1950s.
Most Plasticville buildings are 1:64 scale with 1:48 scale doors, a design compromise that allows them to be used with O gauge, O27 gauge, or S gauge train layouts without looking far off-scale. This allowed one product line to serve Lionel's low-end and high-end product lines as well as American Flyer's product line in the 1950s. Later, as HO scale gained popularity, Bachmann produced a line of 1:87 scale buildings for that standard.