Here I present a detailed expansion of the architecture and structures of Chichen Itzá:
*Main Structures*
1. *The Castle (Pyramid of Kukulcán)*: Main temple dedicated to the snake god Kukulcán, 30 meters high and 91 steps.
2. *Temple of the Warriors*: Decorated with sculptures of warriors and snakes, it shows the Toltec influence.
3. *Temple of the Tables*: Structure with stone tables for rituals and sacrifices.
4. *The Ball Game*: Field for sacred Mayan ball game, 168 meters long.
5. *The Ossary*: Funeral temple for nobles and priests.
6. *The Snail*: Spiral-shaped astronomical observatory.
*Architecture*
1. *Architectural style*: Mixture of Mayan, Toltec and Puuc styles.
2. *Materials*: Limestone, stucco, wood and mortar.
3. *Construction techniques*: Construction of platforms, pyramids and temples.
4. *Decoration*: Sculptures, friezes, wall paintings and reliefs.
5. *Influences*: Classical Mayan, Toltec and Mexica architecture.
*Secondary Structures*
1. *Temple of Xtoloc*: Temple dedicated to the god Xtoloc, associated with rain.
2. *Temple of the Jaguars*: Temple with jaguar sculptures, symbol of power.
3. *Sacred Cenote*: Ceremonial well for human sacrifices.
4. *Casa Colorada*: Residential structure for priests and nobles.
5. *Groups of the Nuns*: Set of administrative buildings.
*Astronomical Characteristics*
1. *Solar alignment*: The Castle aligns with the sun during the equinoxes (March 21 and September 21).
2. *Observatory*: The Snail allowed to observe the celestial movements.
3. *Mayan calendar*: Representations of the Mayan calendar in the structures.
4. *Star alignment*: Some structures align with stars and constellations.
*Symbolism*
1. *Feathered Snake*: Representation of the god Kukulcán.
2. *Eagles and jaguars*: Symbols of power and strength.
3. *Circles and spirals*: Representations of time and the universe.
4. *Images of gods*: Representations of Mayan gods such as Chaac and Ah Puch.
*Restoration and Conservation*
1. *Restoration projects*: Started in 1920 by Manuel Gamio.
2. *Conservation*: Measures to protect the site from damage and looting.
3. *UNESCO*: Declared a World Heritage Site in 1985.
4. *National Institute of Anthropology and History (INAH)*: In charge of conservation and protection.
*Constructive Chronology*
1. *VI century A.D. *: Initial construction.
2. *9th century A.D. *: Toltec influence.
3. *Twelfth century A.D. *: Apogee.
4. *XV century A.D. *: Abandonment.
5. *19th century A.D. *: Rediscovery.
*Sources*
1. "Chichén Itza" of UNESCO
2. "History of Chichen Itzá" by INAH
3. "Chichén Itzá: Official Guide" of the Ministry of Tourism of Mexico
4. "The Maya Book of Life" by John Lloyd Stephens
5. "Chichén Itzá: A Mayan City" by Manuel Gamio
6. "Mayan architecture" by Michael D. Coe
7. "Los Mayas" by Diego de Landa.
