The Venus Platform at Chichen Itza. Consist of a square platform measuring 25m at each side and with a staircase on each side. The ballustrades decorated with snake heads next to the staircase. Bas relief in the walls of Venus depicted as knots with flowers or with jaguar claws. Chichén Itzá (Chichen Itzá) is a large pre-Columbian city built by the Maya people of the Terminal Classic period.