El Rey Archaeological Zone is a significant historical site located in Cancún, Mexico, showcasing ancient Mayan ruins. Its name, 'El Rey', which means 'The King', is derived from a sculpture that is believed to represent a monarch. With 47 structures and a central pyramid, it provides a fascinating glimpse into the pre-Columbian period and Mayan culture. The site is easily accessible and offers a serene escape into history amidst the bustling city.