Comitan, Mexico. Pretty much as far south (or east) as you can go before you hit Guatemala. This is a hidden gem that no one, including me, ever hears about. Beautiful Chiapas Mexico. I loved this place and stayed put for days.
I love these places the most. My god Comitan, what a beautiful, hilly city you are. One of those undiscovered places. The most southern city in Mexico before you hit Guatemala. I stayed here for days just because it was so fascinating and unexpected. I could fall for this place forever.