Ixmoja, also called Nohoch Mul, is one of the few Mayan pyramids you can climb. So it is a magnet for adventurous tourists. But a word of caution: the 120 steps are narrow and treacherous. It is best to slump over and brace against the stairs on the way up or to hang onto the rope. Your reward is a spectacular view of the ruins, dense jungle and nearby lakes. Getting down is best accomplished by the seat of your pants.