5. Tianmen Skywalk, China
Perched nearly 4,700 feet high on the cliffs of Tianmen Mountain, the Tianmen Skywalk is not for the faint of heart. This glass-bottomed path is just three feet wide, offering a stomach-dropping view straight down into the abyss. Walking here is pure adrenaline—ideal for thrill-seekers who want breathtaking views paired with a racing heartbeat. Each step on the transparent panels feels like walking on air… and fear.