5. Tianmen Skywalk, China

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Clinging to the cliffs of Tianmen Mountain in Zhangjiajie National Forest Park, the Tianmen Skywalk is not for the faint of heart. This glass-bottomed walkway, perched nearly 4,700 feet above the valley floor, offers a vertigo-inducing view straight down to the breathtaking landscape below. The transparent panels beneath your feet create a surreal sensation of walking on air, making it a must-visit destination for adrenaline junkies and nature lovers alike. Each step is a test of courage, as the sheer drop below is both thrilling and terrifying.