Buy Best Quallity & Highly Durable Metal & Steel Garages and Garage Buildings with Millennium Buildings.Free Installation and Customization Available.Millennium Building’s custom metal garages are ideal for protecting vehicles and other high-value items from harsh weather, theft, and pests. They can also be customized as guesthouses for the in-laws, man-caves for guys’ nights, she-sheds for hobby time, offices for quiet space when working from home, and so much more.