Chichén Itzá, situated in the Yucatan Peninsula of Mexico, flourished between the 7th and 10th centuries AD as a major political and economic centre. It is one of the most significant archaeological sites of the Maya civilisation, representing a fusion of Maya and Toltec architectural styles. The site reveals the Maya's advanced knowledge of astronomy, exemplified by structures like El Castillo (the Pyramid of Kukulcán), which aligns with the movements of the sun to create striking shadow effects during the equinoxes. The site's layout reflects a precise understanding of urban planning, with distinct zones for ceremonial, residential, and administrative purposes. The Temple of the Warriors is adorned with intricate carvings and features a Chac Mool statue believed to have ritual significance. The Great Ball Court, one of the largest in Mesoamerica, highlights the importance of the Mesoamerican ballgame in Maya culture. Chichén Itzá's engineering prowess is evident in its sophisticated drainage systems and hydraulic features, demonstrating the civilisation's mastery of water management in a region characterised by seasonal fluctuations. Ongoing archaeological research continues to uncover new insights into the complex societal organisation and cultural practices of this ancient metropolis.