Google Tenerife map. If you want to see any area of Tenerife from the sky, Google maps is the best way to have a look at an area. The Hybrid view is especially helpful: You can see the satellite view combined with the city and street names.
Here is a commented list of the main visible names:
Santa Cruz de Tenerife. Capital of the Island
Parque Nacional del Teide (National Park of mountain Teide)
San Cristobal de la Laguna. Previous capital of the island, it is really worthy to walk inside the old city-centre. click on the link to see more details about la Laguna city.