Khám phá chiếc cầu cạn hình xoắn ốc độc đáo
Cầu cạn Brusio ở Thụy Sĩ là một trong những công trình cầu độc đáo được thiết kế dành cho xe lửa tọa lạc tại một địa điểm núi non hữu tình.
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