The ones I'm requesting is...
A outdoors graveyard using the Ruins tileset, and this character set for Tombstones:
(https://rmrk.net/proxy.php?request=http%3A%2F%2Fi11.photobucket.com%2Falbums%2Fa171%2Freashu%2Fsprites%2Ftombstones.png&hash=9876325286ffb271528b54867e752df6cecee355)
The other three...
A graveyard, except using this tileset (http://homepage.ntlworld.com/steven.giles3/graphics/Tilesets/LOS-BlueCasteMassive.png), using the graveyard-ish part of the tileset.
A outdoors windmill, using this tileset (http://homepage.ntlworld.com/steven.giles3/graphics/Tilesets/LOS-Farm.png).
The inside of a windmill, using the Tower tileset from the RTP.
search YouTube for videos by Willowsidhe - she's done an outdoor graveyard using that character set, and also a map tutorial with the ruins tileset. There are probably better ways to do some things than she's demonstrated, but it should give you a few ideas.
Actually I did it for you:
http://www.youtube.com/results?search_query=willowsidhe
The gravestones are used in the Forest tutorial, but they're from the tileset, not the characterset.