从古至今,这世上有多少城墙巍然耸立,抵御过外族的入侵?又有多少城墙将一国之邦分作两边,这边望着那边,吟诵着“本是同根生,相煎何太急”?历史早已久远,有些城墙也已不复当年那般模样,但那些遗留的断壁残垣却仍旧让世人为之惊叹。哈德良长城哈德良长城于公元122年开始修建,用来防御皮克特人的恶意进攻,保卫罗马帝国在不列颠的领土。5世纪初之前,它一直都是罗马帝国最北端的边界线。 From ancient times to today, how many walls in this world stand proudly against the invasion of aliens? How many walls divide the state of one country into two parts, watching over there and chanting “This is the Same Root? Too hasty ”History has long been long, some walls are no longer the same appearance, but those who left the ruins but still let the world marveled. The Hadrian’s Wall The Hadrian’s Wall was constructed in 122 AD to defend the malicious attacks by the Kitts and defend the Roman Empire in the British territories. Until the early 5th century, it had always been the northernmost border of the Roman Empire.