The Valley of Mexico covers the huge city of Mexico and its immediate environs. Go to San Ángelo to visit the Parque de la Bombilla or the 17th century house, the Casa de Risco. The Valley of Mexico can then help you spend your money on side trips to Malinalco or in its many chops. You will need to stay for more than a weekend. The Valley of Mexico has many interesting sites to explore. These include the remains of the Aztec civilization. There are the ruins of the Templo Mayor within the city itself. There is also the Aztec Temple in Malinalco. This Aztec Temple, with its Temple of Initiation is a marvel cut out of the mountain. It is one of only four such structures in the world.