A travel book is about someone who goes somewhere, travels on the ground, sees something and spends quite a lot of time doing it, and has a hard time, and then comes back and writes about it. It's not about inventing. ↗
Mark Twain was a great traveler and he wrote three or four great travel books. I wouldn't say that I'm a travel novelist but rather a novelist who travels - and who uses travel as a background for finding stories of places. ↗