An entertaining horror film from director Ulli Lommel that does have its share of stylish and disturbing moments, but it also often has too many logic holes to ever be considered a particularly great movie. It also has enjoyably ridiculous kills, like this one:
www.youtube.com/watch?v=dHm0hAJm5yU

However, if you're looking for a low-rent version of something like SUSPIRIA and willing to put up with some unintentionally funny moments, check it out.