Intramuros, Manila’s historic walled district, spans approximately 0.67 square kilometers and was once regarded as the entire city during the Spanish colonial era. The strategic location along the bay and at the mouth of the Pasig River made Manila an ideal trading hub for the Tagalog tribes and kingdoms, facilitating commerce with merchants from present-day China, India, Borneo, and Indonesia. The prehistoric polity of Maynila occupied the area where Intramuros would later be established.