The oldest surviving McDonald's location with the Golden Arches is in Downey, California.
The Downey restaurant opened in 1953 and was the third McDonald's location built by the McDonald brothers. It retains the original 1950s building design, including the distinctive pair of yellow arches that helped establish the company's visual identity.
The site is often called the oldest surviving McDonald's restaurant because earlier locations were demolished or substantially altered. It is also home to a museum displaying McDonald's memorabilia and historical material.
San Bernardino is an important related location because it was the site of the brothers' original restaurant and their pioneering 1948 self-service concept. However, the surviving historic building associated with the Golden Arches is the Downey site, not the original San Bernardino restaurant.