The Trojan War may or may not have really happened, but it is one of the best-known stories of ancient Greece. It is believed to have taken place in the thirteenth century B.C., long before the height of Greek civilization.
Near the end of the war, the Greeks had a plan to conquer Troy. They built a huge wooden horse on wheels and left it outside the city. Then they went back to their boat and sailed away. The Trojans thought the horse would bring good luck. So they brought it into their heavily fortified city.