9. Teide Observatory, Tenerife
If your idea of the Canary Islands is limited to package holidays and karaoke bars, think again. Since 1964, the high-altitude Teide Observatory, perched on a volcano in Tenerife, has been an international hub for solar astronomy, with teams from around the world using its sophisticated telescopes to make new discoveries about the sun.
Volcano Teide offers fledgling astronomers guided tours of the observatory, while their "starlight guides" can point out constellations from both hemispheres, meteor showers and, in season, the Summer Triangle.
For the best Tenerife experience, choose the right place to stay with our guide to the best areas to stay in Tenerife.