The home base me and The Girlfriend built, stripped of all machinery and lighting. Take it over if you'd like. Rebuild the tanks in the Industrial Complex for a nice suprise and be sure to check out the high-tech crucible in the Thaumcraft tower. No real secrets or challenges just an abandoned base. There's a few supplies to rebuild from inevitable creeper explosion in the TC Tower as well.
Main Door @
+60, +600
http://www.minecraftsaves.net/map_472-the-mill.php
Old screenshot.
Main Door @
+60, +600
http://www.minecraftsaves.net/map_472-the-mill.php
Old screenshot.