At Ober Gatlinburg (an amusement park in Gatlinburg) there was a playground with an enclosed rope ladder. We tried to get Catherine to climb up it, but she got half way up and decided she didn't want to do it:
So, Catherine climbed back down. While we weren't looking , Sabrina crawled in the rope tunnel and up the ladder -- all the way to the top!!
It is so amazing to me how my children are so different - Catherine is cautious and hesitant. Sabrina is brave, fearless. At times, reckless.