For thousands of years, people read Homer's Iliad and learned the story of the Trojan War. But nobody knew if it had really happened, or if there really even was a city of Troy. In the 1800s, a German man named Heinrich Schliemann decided to look for the city of Troy using archaeology, and he found it (or a lot of people think he found it) in northern Turkey, near modern Hissarlik.
The real city of Troy seems to have first started around 3000 BC. The first people who lived at Troy just had a small village, which archaeologists call Troy I. There was a fort where the chief and his family lived, and everybody else lived outside the fort in little mudbrick houses. A big fire destroyed this village about 2500 BC.