At one point, the zoomed-out map was showing little pyramid icons where I had built Wonders. That was super handy!  But now those little pyramid icons are gone.

How do I get them back?

Thanks!

You click on the influence tab, then you can see all the wonders and where they are built, natural wonders too! 

Thanks. But the only thing that seems like it would be an "influence tab" is in the upper right hand corner next to the science progress symbol. It shows my current influence and how much I generate each turn. But that graphic is not clickable :(

Is that not the Influence Tab? If not, where is it please?

Never mind -- I found it. It is the "Society" circle in the lower left hand corner!