Researching the map: Real World Inspirations - Mayan Temples

These ancient Mayan temples have a clear, visible history to them. They come in many shapes and forms but all have a similar ascetic. these kind of temple ruins is something I would like to include in the southern area of our world. I would like to make these cities in the mountains and forests, something that our characters could visit on occasion but not understand what they are or how they were built. Structures surrounded in mystery before large creatures like the Elephant are introduced. These kind of ruins can be conveniently placed on mountain tops to add to a dramatic atmosphere and scenic layout.