As the Sun sets over Temple of Kukulkan aka El Castillo, during the Spring Equinox, the light and shadows dance down the side of the pyramid, resembling a serpent. The crowds that assemble to watch the light show can create a very electric vibe. If you enjoy crowds, you might like being there this time of year. Regardless of when you go, you will have a great experience. Make sure you take the time to visit Dzilbilchaltun while you’re in the Yucatan, it’s not as crowded and just as beautiful!