Hope that's a typo, as the ruins being discussed are in Central America.
Looking at the pictures of the ruins mentioned, they all look great. Of course, the easiest ones to get to and the ones seen by the most people are Chichen Itza and Tulum in Mexico, close to Cancun. But they are way more crowded than the other choices.
I've seen Mayan ruins in Mexico and Belize, and they are all interesting, considering what you are seeing is actual history, but after a while, they all kind of blend together, and you don't remember specifics about each one (at least that's what happened to me).
But do go and see them, but maybe not all of them.