My husband took me to mexico city for valentines day this year, he knew seeing/climbing the pyramid of the sun was one of my biggest dreams. The view from the top was unbelievable, we sat there for over an hour, both lost in though. It was definately an easier climb up than it was down. My fear of heights quickly overcame me, and I held on to my husbands back, only looking down at my feet on the way down, and climbing down only sideways…which was not a good idea. We made it halfway down before the muscle spasms started in my thighs and calves. Was it worth it? ABSOLUTELY.