Some of you may be creating games that use dungeons. If so, you might check out Dyson Logos' Paetreon: http://www.patreon.com/dysonlogos?rf=49282
He creates some of the BEST dungeon maps out there, and he releases them on a Creative Commons license that allows you to use and modify the maps in your game, royalty free, as long as you attribute the original work to him. That's pretty rad! You can read up more about it here: http://www.patreon.com/dysonlogos?rf=49282
Artwork and dungeon designs can be very hard and/or expensive to get as a RPG designer. This may be an avenue that works for you at a much lower cost.