Game Rules Guide

You need a Wonder village and, in it, the full cost of the next level in stock. The Wonder needs no other building first, not even a particular Main Building level. Because a village cannot store more than its Warehouse and Granary hold, they must be large enough for each resource of the level's cost: 72,200 for level 1 and 1,000,000 by level 100, with 13,200 crop for level 1 and 193,630 by level 100. As with any building, a builder must be free and the village must still have at least 1 free crop per hour after the level's added population.