Tondo is one of the sixteen areas of Manila, Philippines. The locale has existed prior to the arrival of the Spaniards, referred to as "Tundun" on the Laguna Copperplate Inscription. One of the most densely populated areas of land in the world, Tondo is located in the northwest portion of the city and is primarily residential-industrial in nature. Tondo is known for being one of the poorest and most underdeveloped areas of the country.