Once they were grown, Romulus and Remus founded the city of Rome. However, the twins had an argument about where to start Rome. Romulus favored the Palatine Hill, but Remus favored the Aventine Hill. They decided to settle the disagreement by asking the gods. Each brother stood on his respective hill. Remus saw six birds fly overhead, and Romulus saw twelve. However, Remus countered that he had seen the birds first. Nonetheless, Romulus started to build a wall around his city. Then, Remus jumped over the wall as an insult to his brother. Angered, Romulus killed Remus. He regretted it, and took Remus to Amulius's palace, and buried him there.