Old movie can’t find

So I watched this movie a long time ago and it starts out with a man in a field talking and there is a time machine that he steps into. The movie looks old but is in color and some Scenes are black and white. I think he went into the time machine to see either dracula 🧛‍♂️ or Frankenstein. And I can’t remember which. I don’t remember any other creatures that came out of a castle. So help! Thanks