Boca do Inferno (Hell’s Mouth) sea cave and natural rock arch on coast of Cascais, Portugal
Red Fort, historic Mughal fort located in the Old Delhi area of Delhi, India
Triumphal Rua Augusta Arch (Arco da Rua Augusta), Baixa, Lisbon, Portugal
Arch of Antoninus Pius and Capitoline temples, Sbeitla, Tunisia
Aerial view of a scenic road with natural arch tunnel, Lake Iseo, Lombardy, Italy
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