Ready for some high altitude, off the brochure fun? Welcome to Mexico City, the largest (and the highest altitude) metropolitan area in North America. It has great history, great food, and great parks. And we're not talking your normal guidebook here. It's all part of my hidden gems series on Travel Detective on PBS. It's the stuff NOT in the brochures and that only the locals know... Here's just part of the segment we shot there.
