Park service employees inspecting Mount Rushmore National Memorial, South Dakota

The Regata Storica on the Grand Canal in Venice, Italy

Anna's hummingbird

The 'Alien Egg Hatchery' in the Bisti/De-Na-Zin Wilderness, New Mexico

Porto Flavia, Sardinia, Italy

A porcini mushroom

Đurđevića Tara Bridge in Montenegro

Crater glow from Mount Mayon in the Philippines

Underground lake in Ruskeala Mountain Park, Karelia, Russia

Red-billed oxpeckers on an impala in Mpumalanga, South Africa

Casa do Penedo (House of the Rock) in Portugal

A sea swallow feeding on the tentacles of a blue button in Coffs Harbour, New South Wales, Australia