I see maps on a few list. I do own a lot of maps, not because I collect them, but because I use them while researching and treasure hunting.

One of the most entertaining maps I have viewed would probably be the Mappa Mundi. Its a medieval aged map that has depictions of weird creatures and where they live in the world. Thats one I don't own. I think the original is 8 foot tall or something large like that. It would be a fun one to framed on the wall.

Plenty of videos to find on youtube about it. I think the History Channel or Discovery did a decent documentary on maps a decade ago. It was one of the maps in the documentary. If i find a link, ill post it here.