The Missile Silo is a weaponry building costing 1 million gold. It is used to launch nukes.
Usage
The only purpose of the Missile Silo is to launch missiles. To launch a missile, first right click on the targeted and select the building menu. Then chose between the three types of missile, Atom Bomb, Hydrogen Bomb, or MIRV. The missile will be launched by the nearest Missile Silo.
When a Missile Silo launches a missile it becomes red for 8 seconds, indicating reloading. While reloading, it cannot be used to launch any nukes. As of Update 33.0, launching a MIRV also puts the silo on cooldown (previously MIRVs were exempt).