This is one of the places that needs very little introduction, as it's very well known.
Interestingly enough, I never decided to make this trip up to this spot during my previous trips to the island.
However, I decided to finally do it my last trip, and it was about time. It's a tough trip up the curvy road by car (it took more than an hour to go up, and another to come down). At the top, it can get pretty cold (don't forget a jacket. We're talking about below-0 C (32 F) temperatures at the peak).
We got there just at the brightest part of day, as we had planned, just before dawn. The views from atop, and the complex itself, are quite a spectacle. Whether you're interested in astrophysics or not, the views are so amazing that anyone would visit just to see the sunset.