One of the challenges of travel is finding out local information. Finding a guidebook for a major city like London, New York, or Berlin is easy. But there are treasures in many cities that even a local might miss.
My new favorite is Wikihood - a smartphone app that finds wiki articles about points of interest near you. It's like the lovechild of my Garmin and the AAA guidebook in tablet interface.
You let the app find you, and you will get a map with those red dots that indicate a place to visit. Tap on the dot brings up the wiki article. Often it will give you times the attraction is open, or a link to the official site.
And it's free. Don't want to miss it