Below for reference are the world map town backgrounds from the game. I used ShishiSpriteEditor to screenshot the images (from the PSX version of the game...I think it's the same for the PSP version). The image resolution is originally 120x80 pixels but I've increased it to 240x160 pixels in the individual images below. At the bottom of this post is one image combining all town backgrounds at their original resolution.
I think 240x160 is the in-game display size...but if someone knows it's something different, I'll resize the individual images in this post.
01 - Lesalia Imperial Capital
(https://i.imgur.com/WaidU17.png)
02 - Riovanes Castle
(https://i.imgur.com/iJf5A5S.png)
03 - Igros Castle
(https://i.imgur.com/2qZ9Qdg.png)
04 - Lionel Castle
(https://i.imgur.com/b7EEVNW.png)
05 - Limberry Castle
(https://i.imgur.com/5l2NYLH.png)
06 - Zeltennia Castle
(https://i.imgur.com/E1VG0QA.png)
07 - Magic City Gariland
(https://i.imgur.com/dBYxgF7.png)
08 - Yardow Fort City
(https://i.imgur.com/WIRNKW0.png)
09 - Goland Coal City
(https://i.imgur.com/g9zkv8D.png)
10 - Dorter Trade Center
(https://i.imgur.com/E7pg2lA.png)
11 - Zaland Fort City
(https://i.imgur.com/frywqGT.png)
12 - Goug Machine City
(https://i.imgur.com/6KeWkG4.png)
13 - Warjilis Trade City
(https://i.imgur.com/7qIhnLx.png)
14 - Bervenia Free City
(https://i.imgur.com/ZyBBx4P.png)
15 - Zarghidas Trade City
(https://i.imgur.com/5pZTLMt.png)
16 - ?
(https://i.imgur.com/GqdAr1k.png)
17 - Bethla Garrison
(https://i.imgur.com/52tp62m.png)
18 - Deep Dungeon
(https://i.imgur.com/QFGNDEx.png)
19 - Orbonne Monastery
(https://i.imgur.com/v9J9Fgy.png)
00 - Combined Town Backgrounds
(https://i.imgur.com/oGdAKsn.png)
You can actually just export them via shishi. We already have all the images on the site somewhere iirc
My apologies if they're already on the site somewhere. I searched before I posted but didn't find anything for them (or the unexplored lands). They're neat little thumbnails and I thought if nothing else they're good inspiration. Higher resolution versions would be awesome to discover. The descriptions that accompany the unexplored lands add some cool flavor to the FFT world.