Continuing with palces where you can visit here in Bacalar or Chetumal we find:

Chacchoben archeological zone
(taken from: http://www.panoramio.com/photo/15032010)

Chacchoben Archeological zone...
if you preffer discover our old world.. this is your best option, Chacchoben is located like two hours from Chetumal, going to Cancun highway...

a place where you can find mayan magic world... never forget it...