I just saw the German silent film "Waxworks". It is one of the first anthology films, with a framing device of the type later used by Amicus. Not exactly horror, but with startling expressionist imagery and set designs, clearly influenced by "The Cabinet of Dr. Caligari". Here is a link to a page about the film's director Paul Leni, who would go on to make "The Man Who Laughs" and "The Cat and the Canary" before dying of blood poisoning aged 44. Click here for an article about his work, entitled "Paul Leni - The Forgotten Master".