Shanhaiguan (山海关) is a part of the city of Qinhuangdao, in Hebei province, People's Republic of China. It literally means "The Pass of Mountain and Sea".
It is a popular tourist destination, featuring the eastern end of the Great Wall. The "First Pass Under Heaven" is also a noticeable tourist attraction.
SHANHAIGUAN, China, "The Pass Between the Mountains and the Sea", a town at the northern tip of the Bohai Gulf, was originally built as a fortress in the Ming dynasty, to defend the eastern end of the Great Wall.
Far from being a solitary castle, Shanhaiguan originally formed the centre of a network of defences, and smaller forts, now nothing but ruins, existed to the north, south and east, and beacon towers were dotted around the mountains.
Shanhaiguan is a popular tourist destination with the Chinese, but doesn't seem to be much on the traveller circuit, which is odd, as it's well worth a visit.