For a bird's-eye view of the surrounding area, head up to Mirador Escenico de San Carlos. See if you can spot any landmarks in the distance.
You'll have no end of sightseeing choices when spending time in San Carlos. Mirador Escenico de San Carlos is a good place to begin here, but there are loads of other worthwhile sights to enjoy. Los Algodones, Marina San Carlos, and San Carlos Golf Course are near the scenic viewpoint and will top off your day nicely.