"Golden hour" or "magic hour" is the hour after sunrise and the hour before sunset. The light is still bright enough that no artificial lighting is needed to take perfect pictures, but the light is also more golden and more red than normal daylight, giving a warm, glowing look to everything.
A hiker and his dog have a chance encounter with an ibix.
Driving on the Amalfi Coast at golden hour.
The ocean at golden hour. NB the sea stacks in the background.
A humpback whale with a barnacle beard and her calf.
Mount Etna blows smoke rings, called volcanic vortex rings.
Nice pictures of the massive castle in Rome, Sant'Angelo.
Skiing down the sheerest cliff. Note in the beginning, it looks like he's skiing down the mountain's spine, but after a bit he turns his skis towards the cliff.
Akshually, you should go chasing waterfalls.
Golden hour over Durbach, Germany.
Time lapse of a volcano (at Villarica, wherever that is) and the Milky Way: