The Mayan's invented concrete

The Mayan's developed an accurate 365 day calendar

The Mayan's cultivated crops in difficult growing environments and fed thousands of people

Which planet was of great importance to the Mayans

Solstice and Equinox are the 1st days of the seasons

Solstice and Equinox share the same amount of daylight and nightfall, 12 hours each

The Pyramid of Kukulan or El Castillo was built with 4 sides in cardinal directions. What does cardinal directions mean?

Chichen Itza has a ball court where Ancient Mayans played a game using what object?

Chichen Itza is considers one of the 7 Wonders of the World