26 Best Things to Do in Mexico City, From Frida Kahlo's Home to Storied Pastry Shops | Condé Nast Traveler

"Once the centerpiece of Tenochtitlán, the ancient Aztec capital, constructed in 1325 in the marshes of Lake Texcoco, this main temple was mowed over and replaced by a cathedral during the Spanish conquest in 1521. Incredibly, the push to excavate the temple didn't occur until the late 1970s. Today, the hulking stone ruins lie at the heart of Centro Histórico. Embedded in the blueprint of downtown, and somewhat consumed by the scrum of the streets and surrounding buildings, it's hard to imagine the temples in their original Aztecan glory. Fortunately, the open-air archeological site has a nicely organized museum right behind it. The various artifacts and renderings of the great city of Tenochtitlán contained within make it easier to picture. If you are interested in the history of Mexico City, Templo Mayor is a nice way to while away an afternoon." - Scarlett Lindeman