At its peak, around 200 AD, Teotihuacan counted a population of well over 125,000, boasted hundreds of temples and palaces, and three massive pyramids named after the Sun, the Moon, and the Feathered Serpent (itself a symbol of the planet Venus). The ruins of what is often called the Rome of America, Teotihuacan, lie a mere 50 km (31 miles) North-East of modern day Mexico City.