I visited this WHS in January 2016. I always wanted to visit Chichen Itza, one of the New 7 Wonders of the World, and I chose to visit it for my 30th birthday and to celebrate my 300th WHS milestone. The absolute highlight and most famous Mayan monument is the Kukulkan Pyramid and I visited at sunset and after sunrise for the best light for photography. Sunset is still crowded when compared to other Mayan sites. The best time for quieter visit is first thing in the morning. I parked my rental car 100 metres away from the parking lot which was still empty when I arrived. That way, I avoided the short queue of cars waiting 8 o'clock sharp for the parker to grant access to the parking lot! Instead I went straight to the ticket booth and at 08:05 I was alone in front of the magnificent Kukulkan Pyramid. Having visited the day before at sunset, I knew that the sun would be facing the other side of the pyramid opposite to the main entrance so I went straight there. I had this side for myself till around 08:25. After I took a zillion pictures I visited the other main structures worth visiting, mainly the altars, the ball court, the observatory, the little iglesia, the sculpted columns, the skull platform and the sacred cenote. By 10:30am I was back to the main entrance (I had spent hours visiting at leisure the day before!) and the queue was never-ending! The parking lot was full of coaches that practically arrive en masse after 10am. So the bottom line is, if possible visit in the late afternoon or better still early in the morning. I visited Chichen Itza after 2 weeks of Mayan temples and I'm glad I left it for last. However, if you expect a 'jungle/forest temple experience' you might be quite disappointed as it is pretty much a 'visual experience' more than anything else. Nonetheless, it is one of the top WHS on the list and definitely visit at least once in your lifetime.