The lake is shared by Bolivia and Peru. Bolivians like to say they have the Titi part of the lake while Peru has the Caca. Peruvians say it's the reverse.
Interesting fact about the El Alto airport. It's one of the world's highest commercial airports, at 13,325 feet above sea level. Taking off in the thin mountain air requires a bit more runway for the plane to get sufficient lift. My first time taking off from La Paz, I started wondering if we were going to be going to Lima by land, but eventually the plane did make it into the air.
Lastly, one of my favorite images. Mount Illimani as seen from the Altiplano. Mike the Conqueror wants to climb this mountain and every year he doesn't, I heave a sigh of relief.