A base with everything you need to be able to survive on any difficulty!
It Contains:

• A large house to be furnished with underground storage and mines,
  
• A 3 block high wall surrounding to prevent mobs getting in,
  
• Wheat, carrots and potato farm with cows and sheep in a pen,
  
• A nearby village to trade with,
  
• A zombie spawner converted into an XP grinder
  
• Enchanment room + enchanted tools
  

Most chests are full of general items but one of the chests downstairs contains large amounts of iron and some diamonds, for tools and armour.
I hope you like this build, I've been working on it in my personal world for some time and shall continue to develop.