There are plenty of travel guides available for the iPhone, but for those who are looking for something a bit off the beaten path, grab Crash City Guides, which is free.
The iPhone app lists thousands of unique places like hidden waterfalls and obscure museums. You can add your own photos, comments and original content. The app provides a map marking the location, but no directions. Use Apple Maps, Google or whatever you use for navigation to get you there.
Gallery: Crash City Guides
