Transcription: Millions of tourists from all over the world visit Spain and Latin America every year. The most popular tourist attractions are ruins, museums, art galleries and cultural shows as well as the beautiful beaches. If your destination is Mexico, you'll find that the Aztec civilization was concentrated in Tenochtitlan, nowadays known as Mexico City. The plaza of three cultures, where the ruins of earlier civilizations lie beneath that of today is in the heart of the city. Centuries before the Aztecs arrived in Mexico, the Teotihuacan Indians had built the earliest known city in the Western Hemisphe ...