The Weapons Factory on Macbeth is the Venomian Army's main weapons production facility. A large portion of the Venomian Army's weapons and equipment, including the Tripod fighters, the Copperhead Interplanetary Cruise Missiles, and presumably the Ninjin missiles, were developed from this facility, and its construction resulted in most of Macbeth's Birnam Wood being cut down. It was guarded by automated cannon train carts on smaller tracks, a large plethora of Dragon fighters, newer models of the Tripod starfighters, as well as security barriers that activate at a train engineer's command. It was also the place where an experimental weapon, Mechbeth, as well as its various weapons systems, were developed. It also has eight switches that, upon activation, will unlock a train track switcher, one leads to the supply depot approximately 500 miles away, and the other track is closed off because it leads to the facility's main fuel bunker.
During the Lylat Wars, The Star Fox team was sent to Macbeth to liberate the planet. As the base was designed to withstand firepower comparable to that of the Great Fox, the Star Fox team instead decided to simply take out one of the supply trains to significantly delay the Venomian Forces weapons production, with Fox commandeering a Landmaster tank to attack it on the ground while the rest of the team gave air support to Fox. After doing significant damage to the train, Falco managed to spot the fuel bunker on the right side, causing the team to decide to shoot the eight switchlocks, and then activate the track switcher to change the track, sending the train plowing through the weapons facility and destroying the production facility after crashing into the fuel bunker.
- The Weapons Factory is worth an incredible 50 points upon its destruction, making it the most point valuable target in Star Fox 64/3D along with the Wolfen II, even more than Andross' brain. These points are only gained if the player shoots all eight switches, or else they will have to face Mechbeth instead.