Best iPhone Tour Apps

Wikihood

Most comments about GPS-based Wikihood—which compiles Wikipedia pages about the area you’re in—go something like: “I didn’t think it was possible to learn anything new about where I live...but this proved me wrong!” Follow one of its tours and you might uncover a private museum or a tiny theater just around the corner. Pages are sorted by distance and can be mapped, or you can scroll through results by images.

Cost: Free.