© Istockphoto| Rio de Janeiro  il panorama dal Pão de Açúcar

© Istockphoto| Dubai dal Burji Kalifa

© Istockphoto| Sea to Sky Gondola, Squamish British Columbia, Canada

© Istockphoto| New York, i grattacieli e l'Empire State building

© Istockphoto| Marina Bay Sand, Singapore

© Istockphoto|Aiguille du Midi, Monte Bianco, Italia-Francia 

© Istockphoto| Trolltunga, Norvegia 

© Istockphoto| Capo Girao, Madeira 

© Istockphoto| Zhangjiajie, Hunan, Cina

© Istockphoto| Dachstein Skywalk, Austria