the ancient great wall in china

landmark ruins fortification building terrain waterway bridge tourism tower mountain hill cliff village brick watchtowers all along great wall china are built china epublic china republic were republic ancient manybrick landscape sky mountains nature view travel supring panorama rock forest italy architecture blue meteora green trees stone fog scenic scenery beautiful seven wonders world travelling hike hiking walk flowers colors history war han dynasty military construction structure towers stones section ancgreat constructiongreat constructionl