Photo: Comefilm, Equinox
One of the most spectacular of the classic Mayan cities is Chichén-Itzá.
At Chichén Itzá, visitors will gather to see something fantastic during the vernal equinox. The corner of the Castillo casts a shadow in the shape of a plumed serpent which slithers down the Kukulcán Pyramid. The snake’s head points north and the shadow body represents a connection between earth and sky.
Not coincidentally, the temple was dedicated to the plumed serpent deity.
Google Maps
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Acoustics
When you clap standing at a certain distance from the Kukulcán Pyramid, you will hear back an echo that sounds like the Quetzal, a bird sacred to the Maya.
Location
Chichén-Itzá is 120 kilometers (75 miles) east of Mérida off of Highway 180.
Elsewhere on the Web
El cenote del sacrificio humano de los mayas – Alma Reed/INAH
Sacred Sites
Exploratorium.edu
Embedded Tweets
Videos

Wikipedia
Chichen Itza
Planeta