TUMBLR EXPERTS? help about themes?

So I found a persons tumblr who has an amazing layout that i really want but i cant find where they got it from. The layout is mainly for photos that are super close together but fits everything together like a puzzle (keeps photos size). It also has endless scrolling. Anyways, I wont post the tumblr link bc of privacy but does anyone have a link or anything to a layout like that? THANKS SO MUCH <3