English: A map based on the plan in Müller’s Handbuch der Klassischen Altertumswissenschaft ("Handbook of Classical Studies"), showing a conjectural boundary for the original pomerium of the archaic city on the Palatine Hill ("Roma Quadrata") credited to Romulus and the Republican walls later credited to King Servius with its four regions. The plan ignores Tacitus's claimed extension of the city's territory to include the Altar of Hercules in the Forum Boarium between the Palatine and Aventine.