Where was Mark of the Devil filmed?

1970 film

Mark of the Devil (1970) was filmed in Krems, Mauterndorf and Moosham Castle, 3 places named in its German Wikipedia’s Produktionsnotizen section, in Austria. Wikidata itself records the shoot only as Austria. Each place says where its claim comes from.

See them on the map → Wikipedia Source data

Places per German Wikipedia's Produktionsnotizen section

German Wikipedia’s Produktionsnotizen section names 3 places. Each links to the sentence that says so.

Recorded only at country level

Also filmed in Austria, but the exact places are not known, so they are not on the map.

Filming locations that are mapped there: Austria

Also shot in these places