Somewhere in the 90s Napa valley the wine county of USA was attacked by a little pest called phylloxera which reduced all grapevines to grass. Add randomly growing wildflowers and it transformed the hills into lush green flowing meadows.
Around the same time a National Geographic photographer (pictured here) was passing by the hills and he was so attracted that he clicked few pictures.
One of those picture has become the most viewed picture in the history of humanity!
What picture am I talking about? I bet everyone of you have seen it thousands of time!