The Construction technology represents further advancements in building and combining materials, allowing in general more flexible and varied shapes and constructions, and the combination of building materials such as stone and wood. This technology allows your Workers to construct the Lumber Mill improvement in forested tiles, increasing Image:20xProduction5.png Production without destroying the forest. It also allows the construction of the Colosseum, the first standard Image:20xHappiness5.png Happiness-enhancing building. Finally, in Gods & Kings it allows the training of the next generation archer: the Composite Bowman.