Mayan_Observatories

The Maya were keen astronomers and had mapped out the phases of celestial objects, especially the Moon and Venus. Many temples have doorways and other features aligning to celestial events. Round temples, often dedicated to Kukulcan, are perhaps those most often described as "observatories" by modern ruin tour-guides, but there is no evidence that they were so used exclusively, and temple pyramids of other shapes may well have been used for observation as well.