International Leopard Day
The glass dome of Galleria Vittorio Emanuele II, Milan, Italy
Keukenhof Gardens, Lisse, Netherlands
Belém Tower, Lisbon, Portugal
World Penguin Day
Spectacled bear resting in tree, Ecuador
Common clownfish, Raja Ampat Islands, Indonesia
International Day of Human Space Flight
World Heritage Day
Pink apple blossoms, Avila Beach, California, United States
Earth Day
International Dark Sky Week
International Bat Appreciation Day
Logan Creek Suspension Bridge, West Coast Trail, Canada
Easter Sunday
International Day of Forests
African buffalo, Ngorongoro Crater, Tanzania
Short-beaked echidna, Adelaide Hills, Australia
Wildflower bloom, Central Valley, California, United States
World Theatre Day
Papagayo Beach, Lanzarote, Canary Islands, Spain
Skagit Valley Tulip Festival
Castle Day Japan
Seattle, Washington, United States
International Beaver Day
Bing Wallpaper Gallery