What did the Aztecs build?

- Temples and religious buildings: Templo Mayor, Pyramid of the Sun.

- Palaces and administrative buildings: Templo Mayor Complex, Casa de las Aguilas, Palacio Nacional.

- Residential buildings: Apartments, palatial residences, and townhouses.

- Ballcourts: Where the Mesoamerican ballgame tlaxtli, or pok-ta-pok, was played.

- Aqueducts and water management systems: Chinampa agriculture system.

Art and Artifacts

- Sculptures: Colossal heads of Olmec rulers, Aztec Calendar Stone, Coatlicue statue.

- Codices: Painted manuscripts that documented history, religion, and culture.

- Pottery and ceramics: Diverse range of ceramic items for daily use and ceremonial purposes.

- Jewelry and Metallurgy: Gold, silver, and turquoise jewelry, as well as obsidian and flint tools.

- Masks: Ritualistic masks used in ceremonies and performances.

Engineering Achievements

- Causeways and Roads: Extensive network of roads and causeways connecting cities.

- Aqueducts and Irrigation Systems: Complex systems for water management and irrigation in agriculture.

- Tenochtitlan (Capital City): Designed on an island in Lake Texcoco, using advanced engineering techniques to build on unstable ground.

Astronomy

- Solar Calendar: Developed a 365-day solar calendar aligned with astronomical observations.

- Sun Stone (Calendario Azteca): A carved stone depicting solar deities and celestial events.

Mathematics

- Base-20 and Base-5 Numerical Systems: Used in arithmetic, astronomy, and measurement.

- Zero Concept: One of the earliest civilizations to use a zero concept.

Medicine

- Herbal Remedies and Medicinal Plants: Extensive knowledge of medicinal herbs and plants for various illnesses.

- Surgical Procedures: Performed surgeries, including trepanation (skull drilling).