My CC entry: Meteor Base
The design of this build referred to one of my last builds which was spaceship ruins. It is made mainly of martian conduit plating and cogs, with the drill made of certain Martian furniture.
Sub-aquatic spy base complete with holographic globe.
For anyone wondering, the windows are bubble blocks painted deep sky blue with alternating green and blue gemspark walls behind them to provide that aquatic glow.