The Olympia Diner was crafted by the Jerry O'Mahony Diner Company, of New Jersey, who was said to have produced 2,000 diners from 1917 to 1941. These roadside diners were primarily metal buildings, prefabricated in a factory, and trucked to the location. The Olympia, originally opened in Massachusetts,was brought to Newington, Ct in 1954. The three sections were set atop a waiting foundation and the terrazzo floor was poured on site. It is known as the longest stainless steel diner in the country. The "OD" as the locals refer to it, has been owned by 3 families. The Kritikos and Goulias families respectively for 10 years each, and the current owners, the Gavrilis family, since 1974.
In 1986 a dining room was added to the diner, doubling the square footage to accommodate the increasing business. Since it's opening on the pike, the diner operated 24 hours a day, closing only for Christmas. In 2000, the family decided to change the hours to 6:00 am - midnight. The feel has always been family oriented and welcoming. Regulars are referred to by name. Many families who patronize the diner have brought in children and grandchildren who in turn became customers as they grew up, keeping the tradition alive for generations.