One thing at a time.

The Walls of Ten Thousands Miles. There are poems, histories, stories etc. It is a culture symbol. A feat of human military "engineering"?

True, most of the walls decayed over time. The Ming Walls expanded it.

During culture revolution, the Walls were destroyed as the symbol of the old.

There are parts rebuilt to attract the tourists.

There are nice hotels nearby with a great view.

---