I Can See My House From Here (Bronze) - Climb to the very top of the Clocktower in the City
After solving the bell puzzle inside of the clock tower, you will need to climb to the top and ring the big bell there. Instead of ringing the bell, find the footholds that will allow you to reach the peak of the clock tower, where you can perch yourself on the top, hear a remark from Nathan and get yourself another trophy.
Check out the full guide: http://www.gamerguides.com/uncharted-4-a-thiefs-end/information
Official Site: https://www.gamerguides.com/
iTunes App: https://itunes.apple.com/us/app/gamer-guides/id599410871