Grand Canyon National Park turns 105
Saguaro cacti, Ironwood Forest National Monument, Arizona
1934 Labor Day parade, Gastonia, North Carolina
Skyscraper Day
Ring of fire solar eclipse
La Brecha de Rolando (Rolands Breach), Spain
Sweetheart Abbey, Scotland
Great Sand Dunes National Park and Preserve
Venice Skatepark, Los Angeles, California
Glass footbridge in Zhangjiajie, China
Sibiu Christmas market, Romania
The Guggenheim Bilbao turns 25
Flower of Life symbol drawn in snow
Russell lupines, Lake Tekapo, New Zealand
Navajo Bridge in Marble Canyon
Chaco Culture National Historical Park, New Mexico
Daintree Rainforest and Noah Beach, Queensland, Australia
Astronomy Day
Brown bears, Katmai National Park and Preserve, Alaska
Berlin Festival of Lights
Capitol Reef National Park, Utah
Manatee Awareness Month
Cinco de Mayo
Marshland, Gloucester, MA
Río Arazas in Ordesa y Monte Perdido National Park, Spain
Bing Wallpaper Gallery