Both the Riviera and Eighty Eight are produced at the assembly plant in Orion Township, Mich. The plant also produces the Aurora, Buick Park Avenue and Pontiac Bonneville.

Riviera still turns heads, but its price tag won’t break the bank—unless you're hunting for a pristine collector example.

In 1965, another milestone was reached – the introduction of the Gran Sport option. Out of the total 34,586 Buick Riviera, 3,354 sported the GS badge and the assorted Super Wildcat V8.