The 1924 Carlinville origin and the 1935 move to Litchfield
Pete Adam, a Greek immigrant who arrived in central Illinois in the late 1910s, opened the original Ariston Cafe in Carlinville in 1924 — a year after he arrived in the area and two years before Route 66 was officially commissioned as a U.S. highway. The original Carlinville location was a small storefront cafe serving a mix of Greek-American comfort food (the family's heritage cooking) and standard American diner fare (what Illinois farm-country customers expected). The name "Ariston" comes from a Greek word loosely translatable as "the best" or "excellence" — a common Greek-American restaurant naming convention of the era.
Pete's brother Tom Adam joined the business in the late 1920s, and the brothers operated the Carlinville location through the early 1930s. The decision to move to Litchfield in 1935 was driven entirely by Route 66. The original 1926 Route 66 alignment bypassed Carlinville and ran directly through Litchfield's commercial district; by the early 1930s, the highway traffic on Route 66 was producing roadside-restaurant volumes that Carlinville's smaller off-highway location could not match. The Adams sold their Carlinville business, secured the Litchfield property, and commissioned a purpose-built roadside cafe to capture the Route 66 trade.
The 1935 Litchfield building was designed specifically for the highway business. The long parking frontage allowed truckers to pull in without complicated maneuvers, the dining room was sized for the lunch-and-dinner rushes that Route 66 traffic produced, and the kitchen could handle high-volume short-order cooking. The vertical neon sign — originally a custom commission from a St. Louis sign company — was positioned for visibility from approaching cars in either direction. The building opened in summer 1935 and has operated essentially continuously since.