Now there are some cautions to this technique. You must be sure your audience understands the comparison. If your reader doesn't know who Frankenstein is, now he or she is only confused. A good comparison will be original without needing explaining. That being said, I'm about to break all the rules.
If I say VCFA (Vermont College of Fine Arts) is like Hogwarts, I hope you get the picture that VCFA is an intriguing and beautiful place where magical things happen. In the interest of fun, though, photos and explanations below.