This is farther than Coba or Tulum but well worth the trip. You will not believe what the Mayans were able to build with no wheel power, just their hands. We were very lucky to get a local historian as our tour guide. We left there feeling like we had completed a university-level history course on the Mayans, which I had taken before, but I never felt like I knew the history until I got there. Make sure to wear your best walking shoes, as that is all there is too do. Pay the extra money and fly in, as the bus ride is 3 hours and there is nothing to see on the way. You want as much time as you can while you are there. There are many areas to see, and after your tour, you will want to go and explore more and climb the temple. There is a lot of additional information inside the museum that is well worth your time as well, but the ruins really are a sight to be seen.