Stone staircase in the rock palace at Sigiriya, UNESCO World Heritage Site, Central Province, Sri Lanka, Asia

Tourists at Angkor Wat, UNESCO World Heritage Site, a Hindu-Buddhist temple complex near Siem Reap, Cambodia, Indochina, Southeast Asia, Asia

Stairs going down from the fourth floor in the historic Desert View Watchtower at Grand Canyon South Rim, UNESCO World Heritage Site, Arizona, United States of America, North America

Caucasian climber throwing rope down mountainside

Ice Climbing in Pyha, Lapland, Finland

Ice Climbing in Pyha, Lapland, Finland

Looking down on the multi-pitch route on Leonhardstein, Bavarian Prealps

Wild Tiger (Panthera tigris) looking down from a tree in Ranthambore National Park, Rajasthan, India, Asia

Steps down the cliffs of Jons Kapel near Hasle, Bornholm, Denmark, Europe

Jonathan Borowsky's "Man Walking to the Sky" statue, Kassel, Hesse, Germany, Europe

Yon Lambert bears down on tiny holds on Pawing The Void (5.12b/c) on the Southwest face of Cedar Rock near Brevard, NC

Women rock climber in yellow tank top hangs upside down while climbing a difficult rock climb.

Netherland Antilles, Bonaire, Brittle Starfish on tube sponge.