You have Google; you can check what is supposedly worth seeing on this beautiful island. I would, however, suggest you, not to do that. Instead, when you land, rent a car. Then just drive and be perceptive of your surroundings. Don’t have a specific destination or time when you have to be there. Drive and take in what is drawing in front of your eyes.
When you’ll detect something you find beautiful, interesting or strange: stop and have a look.
Are you getting hungry? Don’t make a science out of it. It doesn’t have to be rated on Tripadvisor for you to try it. Stop as soon as you see someplace that looks like they have food. Don’t be picky. If you already passed several bars and restaurants, and you were like: “No, not that one; no, this one looks strange...”, you are doing it wrong. Just stop men! You probably won’t die if for once you eat somewhere where they have different aesthetic and hygiene standards. It is an adventure, and it can surprise you. Even in a positive way.
We planned to stay on Gran Canaria for one month, but then we made some impulsive decisions and stayed only four days. It wasn’t because it wouldn’t be worth to linger longer - it totally is!
The first day we arrived, we were exhausted. After exploring Tenerife for one month, we didn’t have any specific plans. We sat in a car and drove. We ended up in Telde. We parked and walked to the park. The park was green, with soft grass, a lot of different trees, blooming bushes and great playground for kids. Next to the playground was a bar, where we could relax while kids were playing. Later we strolled to the city center. We were lucky to see musicians practice their instruments wearing folk costumes. We found a smaller park with another playfield, next to the charming building with a library inside.
Next day we rambled Gran Canaria’s forests. On our return back to the flat we choose different road which offered us splendid views. We’d driven through the village we instantly liked, stopped, realized we are hungry and entered the nearest bistro. There wasn’t much to choose from, but I did taste the best pizza on Canary island. It was homemade and delicious.
We did also visit Maspalomas and Las Canteras beach in Las Palmas, Pico de las Nieves and Puerto de Mogan, all of which we found suggested on websites. But what stayed in my mind as pleasant memories, wasn’t any of this places, but the ones we encountered spontaneously.
P.S. We enjoyed Dunes of Maspalomas, though: they were awesome :)