I'm going to go visit mayan ruins again in person this fall, for the third time........
3 hours inland of Cancun, Playa Del Carmen, and Belize jungle.
incredible Mayan culture, and they're still digging the ruins out from under the jungle over growth with vast areas and cities / temples undiscovered.
https://www.google.com/search?q=mayan+culture&rlz=1T4GGLL_enUS416US416&tbm=isch&tbo=u&source=univ&sa=X&ei=BVbyU5qhJc3goASpn4H4Bg&ved=0CDYQsAQ&biw=1536&bih=688