Human beings choosing to live in the environment must be the best place to find the environment.
Globally, most of the capitals of countries choose to live along the river, and there is life when there is water, for example, the capitals of Southeast Asian countries are mostly distributed along rivers such as the Mekong River.
Second, climate matters. It can't be too hot or too cold, so you'll find that mid-latitudes, temperate regions, have the most populations. Even if it is located in the tropics, it will choose high altitude areas, such as Brasilia in Brazil, Quito in South America and other cities because of the high altitude and coolness.
Third, the terrain, only flat terrain can have arable land, by growing crops, to meet the need for food.
The intellectual capital of Lima, is different, it is located in the location of many people are incomprehensible, located near the desert, is a "rainless city".
In this city, you won't find shops selling rain gear because it basically doesn't rain. Its annual precipitation is less than 30mm, which is basically negligible.
Lima was able to choose to camp in the desert because the place is not short of water. To its east is the Andes Mountains, with plenty of meltwater from snow and ice. In addition, there are cold currents passing along the coast, which cause this area to be foggy. So the air is still very large.
