Venture through cobblestone falls and explore the castle that was destroyed.

Objectives:

Explore the castle.
Repair the castle to it's former state.
Repair the nether portal.
Explore the nether.
Make a town 50 blocks away from the castle using nether blocks and have at least 3 small houses.

~Hint~
Perhaps the floor/roof of the citadel can be used for infinate water?
Those who can banish lava and swim in water will find many riches.

~Can be done solo or duo~