Panoramic view of famous ancient stone fortress Sigiriya (Lion Rock) on island of Sri Lanka
Double arch stone bridge at Ponte dei Salti with waterfall, Lavertezzo, Verzascatal, Ticino, Switzerland
The Chullpas of Sillustani, Umayo Lagoon near Lake Titicaca, Puno, Peru
Stone bridge over the River Conwy and old cottage, Llanrwst, Caernarfon, North Wales, UK
Double-arched stone bridge Ponte dei Salti, Lavertezzo, Verzasca Valley, Ticino, Switzerland
➤