Here's the latest map of mine for you to explore and edit as you like.
Hyrule Castle
(http://solarus_resource.site88.net/tutorial/maps/hyrulecastle.png)
Here's the map file:
http://solarus_resource.site88.net/tutorial/maps.htm#hyrulecastle
Remember to update your tileset, entities pack, and their data files. Maps will appear corrupted otherwise.
Happy mapping!