Well, apart from Nosferatu and Argento's films, you could try; Vampyr (Dreyer), The Vanishing (Sluizer- Dutch original version), Les Diaboliques (Clouzot), Audition (Miike), Ring (Nakata), Eyes without a Face (Franju), Onibaba (Shindo),  Cronos, The Devil's Backbone (both by Del Toro), Witchcraft through the Ages (Christensen)..

Ugetsu Monogatari (Mizoguchi) and Kwaidan (Kobayashi) are beautiful rather than frightening Japanese films with ghosts.