Recommendations for a bag for passport.

Hi so I'm going to portaventura in October and I'm wondering if you know of any small bags that I can keep belongings (passport, money) in so it won't get stolen. is my best bet something like a fanny pack? Something around the neck? Or just using my zippered pockets in my shorts? I would appreciate some direction. Thanks a bunch.

Just noticed this now. Just Google "money belt". You'll find plenty of options. Here is one on Amazon. I used one just like this when I backpacked Europe after graduating college. Hope this helps, and enjoy your trip.