La Silla
La Silla is a high mountain pass at an elevation of 2.400m (7,900ft) above the sea level, located in the southern part of the Atacama desert of northern Chile, the driest and remotest desert on Earth.
The road to the summit is called C-541. It’s asphalted but pretty steep. At the summit there’s La Silla Observatory, which has 14 optical telescopes with mirrors with a diameter up to 3.6 meters and a radiotelescope of 15 meters.