My stay at Nizuc last week brought with it a surprise visit to Chichen Itza. Seeing the historic Mayan city wasn’t on our agenda, but with it being a two-hour drive away and having never been there before, it seemed shameful not to make the effort. And I’m so glad we did! It was a gray, overcast day, which added a bit of mystery and drama to the experience. I was surprised by the crush of tourists—and souvenir vendors (“¡Everything one dollar!”)—that we encountered when we arrived, but thanks to our encyclopedic guide, Alejandro, they all faded into the background as he plied us with stories about the Mayans’ mindblowing mathematical and engineering skills, their governance of everything from agriculture to their calendar based upon numerical systems, and even their link to astrology. If you have a trip to the Yucatan Peninsula planned, go to Chichen Itza, and see it with a guide. You’ll be glad you did. What historical sites have you been to and loved?