The map can be found in the downloads section or you can get it here: Minecraft map save.
You start the adventure by going through the main doors where you'll have to defeat monsters and solve some puzzles to continue. The building is jam packed with traps, monsters, twists and turns.
This map is meant for people who like to play hard (that means with monsters on).
I built this map to be really super tough.
I challenge people to enter it without any gear; I did design it so someone really good at minecraft should be able to get through empty handed (you'll find plenty of gear hidden inside).
If you die you'll re-spawn about halfway through the map. You'll miss a lot that way. So dying really super sucks.
I built the levels and challenges in such a way that there are always two ways to defeat them and two ways around everything (except the end challenge).
Oh yeah,.. and I built a new art gallery and fancy waterside restaurant:
I'm going to try and make a video of it soon.
I started this some time ago so it is entirely made in the 1.7.3 build. It should work just fine in 1.8 or 1.9 pre release.