The Qinghai-Xizang Plateau has long been known as the roof of the world.

青藏高原素有世界屋脊之称。

《新英汉大辞典》

FLYING over the roof of the world can be tricky.

飞跃世界屋脊可能很棘手。

youdao

According to this derivation heaven would be conceived as the roof of the world.

根据这一推导天堂，将被视为世界屋脊上的。

youdao

So they just have kind of all these different amazing things about the world, all under one roof.

那一个地方就拥有世界上各种各样令人惊奇的东西。

关于旧金山的博物馆 - SpeakingMax英语口语达人

Welcome to the country on the roof of the world and warmest greetings from the materially poor but spiritually rich people of Nepal!

BBC: Text: Nepal rebels invite tourists

Muldoon no longer flew commercial, not even in first class, but soared above the roof of the world in private jets provided by the studio.

NEWYORKER: After the Movie

Since New Zealander Sir Edmund Hillary and Nepali Tenzing Norgay first summited the roof of the world in 1953, nearly 6, 000 people have attempted the climb to the summit.

BBC: Everest's growing problem