Day 1

After an early wake up, I began my exploration of the central Historic District. A beautiful, sun-filled day and my first stop was the busy Zocalo square, Constitution Plaza  where in 1813 it was signed. 
I love the old architecture, Next stop is the Dominating Zócalo square, the massive Mexico City Metropolitan Cathedral (Catedral Metropolitana de la Asunción de María) is one of the oldest and largest churches in the western hemisphere. Built atop part of the old Aztec temple precinct, construction of this massive basalt and grey sandstone structure began in 1525 and extended over 250 years. In spite of the two neoclassical towers and certain other features, the facade creates a predominantly Baroque impression with its massive twisted columns, with particular highlights being the bell-towers added in 1793 and the statues of Faith, Hope, and Charity on the clock tower dating from 1813. 
Took some pics then walked over to: 

The most important site is Templo Mayor, home to remains of the Great Temple of Tenochtitlán, including the first relic discovered in 1978, a finely sculpted round disc more than three meters in diameter and weighing eight-and-a-half tons. Further excavations - including the summit platform of an earlier pyramid with well-preserved temple walls along with the skulls of sacrificial victims - indicate the temple site had been built over by the Aztecs and their predecessors 11 times. A highlight of a visit is a walkway past the precinct of the aristocratic "winged warriors" where remains of residences decorated with multi-colored reliefs have been unearthed, along with evidence of the original paintwork. The disappoint was that they did not have them uncovered. 
The museum next to it was not as impressive as it had no signs in English to let you know what you were seeing.
I headed for a Starbucks and a snack the walked to the House of Tiles and one of Mexico City's most important cultural landmarks, the Palace of Fine Arts (Palacio de Bellas Artes) is an architectural gem. Towering over the adjacent park, this massive marble building - designed by Italian architect Adamo Boari with Art Nouveau and Art Deco influences - was completed in 1934 and is so heavy that it has sunk more than four meters, despite attempts to lighten it by removing part of its huge dome.
I walked back to the hotel to hotel to check out and grab a cab to IGH hotel.