Wikitravel Offline is a browser for Wikitravel that has been specially engineered for offline access.
Wikitravel is an open source travel guide like Wikipedia. It has phrasebooks in over 30 languages, as well as information about history, sights, culture, airports, food, etc. for places all around the world. This app includes all of the text, including tables, but no images. Images can be downloaded from the internet and embedded into the articles.