... with 5,000-meter peaks in the background... Very rugged and impressive.
This valley has the clearest air in the world, with almost no dust particles. Therefore, the most telescopes can be found here within a radius of up to 50 km. Every village has its own telescope. The international telescopes are mostly located on high mountain tops.
However, you don't need all of that, because the stars are so crystal clear to the naked eye, including the Milky Way in its full extent.