Welcome to the Steampunk Castle,a nice to have a good time discovering the secrets of the castle, and view the amazing places in the castle, you start on a boat, then you go to the back and you should find a block of commands and a pressure plate, stand up place and will take you to a cave, then you are looking stairs, climb, you follow a corridor carrying a lift, you enter the acensor and give them the button above, then from there, is entirely at your discretion

I hope difrutes this map, also off the boat there is a bar that looks like a house near the castle there watchtowers, but I think that is enough

Original Link map:
http://www.minecraftmaps.com/creation-maps/steampunk-castle/viewdownload

(This map is not mine, is the creator of the original link of this map, I also want to say I play this map on the 1.8 is not recommended, so if you want to play this map at 1.8 I recommend using Optifine and better play in the 1.7.10 or 1.7.2 )