In 1922, the German director F. W. Murnau wanted to make a Dracula adaptation. But he didn't (couldn't?) get the rights to the novel. So he changed the title "Dracula" to "Nosferatu", renamed "Count Dracula" to "Count Orlok" and... that was about it. The movie was so obviously a beat-for-beat remake of the plot to Dracula that Bram Stoker's widow successfully sued the studio and won. The court ruled to have every copy of the movie destroyed. Fortunately, a couple copies survived and it is now known as one of the best examples of a horror movie from the silent film era.
Since this movie is so old, it's also in the public domain. This means you can watch it anywhere. Since no one has to pay any licensing fees, it's on a bunch of streaming services (and youtube). Be warned though, I recommend watching the original in black and white. Don't bother watching any colorized versions of this movie, it's better to keep the movie in a creepy black and white.
They just released a new version of this! I'm not a vampire expert but my horror enthusiast partner says it was good and very true to the source material. The movie doesn't spell everything out for you, and I'm dumb so I missed a few things, but it was entertaining and creepy.