A Journey in Pictures
You won't be using an elephant gun on your African safari to bag the big one (photos are legal and much more PC these days), and you won't be able to bring a chunk of Stonehenge back from Britain as a souvenir, either. You can still keep a pretty impressive visual record of your travels, though.
Pictures capture the flavor of a locale, and they're easy to use in your décor, too. You can go with a simple and inexpensive electronic photo frame, or arrange individual matted and framed photos into a dynamic collage of your travels. Even if you're a lousy photographer, it's not a problem. Buy professional prints of picturesque locales you've visited (or want to visit). The exposures will be perfect, and no one's elbow will accidentally make its way into the shot.