How to list pages using featured image and title?

Hi,
I need some help on this :
I want to list some pages displaying the featured image and the title (both must be a link to the permalink)
I could show the featured image on the green bordered div but for a parent page ??

But what I need is to have that effect of the red div
Here’s the code

[Code moderated as per the Forum Rules. Please use the pastebin]

any help would be really apreciated
Thanks

website is @ fotografiasdeangola(dot)com/1/benguela/