Climbing up those radio towers isn't too hard, but getting to them can be another story. Since they're often located on high ground at the tops of hills and rocky bluffs, they can be a real pain to get to. Luckily, there's also almost always a hang glider nearby, and that alone makes it worth it to trek all the way up there.
Hang gliding isn't a new addition, but we often found it to be the best way to get to the next objective. You get a scenic view, of course, but it's also the only way you can take a straight path to your goal. The roads are windy and treacherous, but the skies are clear. Just don't try to fly one directly to the top of a radio tower; you will die (we learned that the hard way).