Why are there temples on the roof of Tibet Building?

This seems to make their customs there. Many temples there are built in high places.

Experts call this kind of building a Zongbao-style building, and some experts call it a cliff-style building. There are different opinions on why this kind of building should be built on a cliff. One school believes that it is for security needs and defense purposes. Another school believes that it is related to religious belief, in order to communicate with the world of God. When these buildings are palaces of secular political power, these cliff-like buildings want to express the idea that "kingship is God's falling from the sky". Building the palace on a cliff is also a manifestation of Tibet's belief in mountains and mountains. Those buildings built on the top of the mountain and the mountain are the epitome of the mountain, and they are the substitutes for the giant mountain of wasteland in the world. Building a building on a high place is for devout Tibetan compatriots to communicate with the gods in the sky, respond to the call of the gods, and let the spiritual world find a place to live and get peace of mind.