‘World in Progress II,’ a land art painting by Saype, United Nations Headquarters, New York City (© Valentin Flauraud/Shutterstock)

Virgin River in Zion National Park, Utah (© Jonathan Ross/Getty Images)

The gates of the Royal Palace (Dar al-Makhzen) in Fez, Morocco (© Adam Smigielski/Getty Images)

Bridge on the McKenzie River Trail, Willamette National Forest, Oregon (© Don Paulson/Danita Delimont)

Cliff dwellings in Mesa Verde National Park, Colorado (© Brad McGinley Photography/Getty Images)

North American river otters swimming in Acadia National Park, Maine (© George Sanker/Minden Pictures)

Ruins of the medieval castle of the Knights of St. John above the village of Chorio, Halki Island, Greece (© Massimo Ripani/eStock Photo)

The Punch Bowl on the River Quoich in the Cairngorms, Aberdeenshire, Scotland (© AWL Images/Danita Delimont)

Bald eagles near Haines, Alaska (© Marion Vollborn/Minden Pictures)

The Vietnam Women’s Memorial in Washington, DC (© Cvandyke/Shutterstock)