
LEGO Town Plan was a theme introduced in 1958 and lasted until 1966 and was under the System i Leg (System of Play) theme. The theme was unveiled at the Nuremberg Toy Fair in February 1955. LEGO Town Plan originally consisted of the existing 700 series LEGO Mursten sets, several new HO 1:87 scale accessories, and a vinyl play mat. However, over the next several years the system was expanded with both new building sets.
1955 LEGO Sets
1955 marked the debut of the LEGO System i Leg—“System of Play”—the foundation of the modern LEGO philosophy. Introduced at the Nuremberg Toy Fair, the concept unified LEGO sets under a single scale and theme: a buildable town with houses, vehicles, and streets. Though early reception was cautious, it established the guiding Principles of Play later adopted companywide. LEGO also entered new markets in Sweden and Germany, broadening its reach beyond Scandinavia.