These 'forgotten' Formula 1 circuits are located in countries currently (as of 2022) on the Grand Prix calendar, but the current event is not held on any of these particular circuits.
french grand prix (1965, 1969–1970, 1972)
CIRCUIT DE CHARADE
CANADIAN GRAND PRIX (1968, 1970)
CIRCUIT MONT-TREMBLANT
UNITED STATES GRAND PRIX (1961-1980)
WATKINS GLEN INTERNATIONAL
SPANISH GRAND PRIX (1968, 1970, 1972, 1974, 1976–1979, 1981)