The highlight of Canopy Tower is the view from the top. On your first view you're taken away. Not often will you ever in your life bird from the treetops and the Canopy gives you that experience each day. It was definitely one of the major highlights of the whole trip!
Once through the trap door entrance you see nothing but sky and then miles of lush green rainforest. The view is remarkable. You can watch the boats slide through the canal, the parrots fly overhead, and the honeycreepers come within feet of your camera.
If you ever have the chance to visit Panama then you must visit the Canopy Tower. It's one of my favorite places in the world.