Is there a cheat code that will destroy an enemy's wonder?

I'm on the 6th level in the Genghis Khan campaign and the enemy built a wonder and I don't have enough time to destroy it. I like to play slowly. I googled a list of cheat codes and tried "to smithereens" but it doesn't work. I have no idea how to beat this level without cheating. It exhausted me just defending against their initial attack across the bridge.