The first thing that strikes you about this advertisement is how it could have been written in 2011. (It, and the following two ads, actually appeared in the New Yorker magazine in May, 1961.)
The second thing that strikes you is how nice the graphic design is. (This was the era of "Mad Men".)
(Click on the pictures for bigger versions.)
When you have finished providing clean drinking water for everybody (it has only been 50 years, and we're not nearly there yet) you can take a break. Why not fly Pan Am to Rio. Or Buenos Aires. (The sound of bossa nova is in the air.)
Or take the whole family bowling. (This one does contain some text on the next page, but it's the picture, innit.)