3. Pyramid of the Sun, Mexico
The pyramid of the sun is the largest building in Teotihuacan and is found between the Avenue of the dead and the Pyramid of the moon. It is the first true city in the Mesoamerica and at its peak housed more than 200,000 people. The city was abandoned in 750 AD due to a natural disaster and was founded by the Azecs again 500 years later. Pyramid of the Sun is the third largest pyramid in the world and stands at a height of 230 meters. The engineering marvels that these pyramids were in the yesteryears make visiting Teotihuacan a wonderful experience and is among the best places to visit in the world.