The 1960s McDonald’s logo turned the two Golden Arches into a stylized capital letter M.
The arches began as structural features on restaurant buildings, where their height and bright color helped attract drivers. When McDonald’s adopted them as a corporate symbol, the two arches were arranged side by side so their outlines also suggested the first letter of the company name.
This dual meaning made the mark particularly effective: it recalled the architecture customers recognized while also functioning as a simple letterform. The logo could be reproduced on signs, packaging, uniforms, advertisements, and later digital surfaces without showing a whole restaurant.
The arches are sometimes described only as an abstract “M,” but their historical identity matters. They were not invented as a conventional letter logo from the start; they evolved from the restaurant’s roadside architectural design.