Here are a couple of horizons that I have been able to capture throughout my travels. The far left picture is a horizon over the ocean in China (2012), the top middle is a field of flowers somewhere in Central California, the bottom middle is the ocean from Hawaii (2008) the top right is the horizon from Death Valley (2005), and the bottom right corner is the view of Athens, Greece (2010) taken from a mountain-top.
And here are a couple more horizons taken out of my daily life. The first is the ocean horizon from La Jolla beach in San Diego, CA. The second is me on top of a hill nearby our neighborhood, and the third is the sunset from my house.