Unique B&B Near Santa Engracia, Tamaulipas
The Quinta Tesora de la Sierra Madre just off HWY 40 near Estacion Santa Engracia, Tamaulipas (not too far from Cd. Victoria) is a most welcoming and relaxing hotel / guest house / wildlife refuge to stay at in Tamaulipas state. It is run by a transplanted Texan who treats you like family when you and your family come to stay.
There is a very interesting hacienda only a few hours from McAllen, run by an old gringo and a crazy cat and a lazy dog or maybe a crazy / lazy gringo and an old cat and dog. Nature walks, birding and butterflies are some of the attractions. There may even be UFOs at night. I am not sure, but judging from their website, the owner may be a bit of a Sherlockian, as am I. Gotta love fans of the Great Detective!
There are birding tours and butterfly tours he (the gringo, not the dog) can arrange. Breakfast is included in the price of the room, which is reasonable. Lunch and dinner are treats not to be missed for a reasonable charge. You go here to forget about the outside world, which you will.