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"Perched at Vietnam's extreme north, this hilltop tower offers sweeping panoramas of receding mountain ridges that resemble Chinese ink-wash paintings. The site carries a heavy historical weight: it occupies a once-sensitive border area contested during and after the 1979 Sino–Vietnamese War, a period when foreigners were barred and violence was common, and guides commonly recount those tense years while overlooking the landscape." - Ron Emmons