Pete Orford has compiled and edited a new collection of Dickens's travel writings, called simply Charles Dickens on Travel. He writes about it here, and critic Frank Bures gives it a glowing review here. Both of them emphasize the timelessness and the accessibility of Dickens's writings.
Bures hits on something that, in my view, helps to make Dickens's descriptions of scenes and places so much more interesting than any other writer's:
It seems remedial now, and it is, but it’s something Dickens seemed to realize long ago: Travel is not that interesting. People are. Stories come alive only when there are people in them. Travel and nature writing both purport to be about physical things. But they are really about us, and to the extent that they aren’t, they are simply bad, or boring, writing.