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A waterfall of "underground river" origin emanating from a grotto/cave in a canyon. Picturesque but may need to inquire as to condition since runs low at times. May be possible to swim in pool below.
© OpenStreetMap contributors
Nature preserve and swimming pool. (May want to take a look at the color of the water before jumping in.).
COCYTECH
A museum for all of the science lovers out there. Anthropological and zoological exhibits, etc.
A spacious zoo which hosts only animals that can be found in the region naturally. In fact many of the animals roam the area freely and are not kept in cages. Don't miss the Museo del Cocodrilo while you're here.
Though more tourists visit here as part of a tour from San Cristóbal de las Casas, the viewpoints over the top of the canyon are actually accessed from Tuxtla, and are convenient to visit from the city center if you have your own car. For more info on the canyon, see the Cañón del Sumidero article. Though the entrance (marked on the map in this article) is accessible by colectivo Route 69, the actual viewpoints are many kilometers up the road through the national park, and the staff at the tollbooth won't let you in without a car except during "athlete" hours from 6-8 in the morning. It's possible to tour all the viewpoints by taxi for 500 pesos (total per car), but keep in mind that you may get the same thing for cheaper if you take a tour through a tour agency that also includes the boat trip through the canyon.
Games, rides (e.g. go-karts), replicas of pyramids and dinosaurs, etc.
Paleontology exhibits specific to Chiapas. Tuesdays free?