Your first stop is Chapultepec castle, which translates to ‘hill of the grasshopper.’ The estate was built on the top of a hill overlooking the area that was once a sacred spot for the Aztecs. The sprawling colonial castle was completed in 1863 and is the only royal home located in North America. Over the course of 150 years, it has housed emperors, princesses, presidents and entire entourages. Today, the Chapultepec is home to Mexico’s National Museum of History.
You climb the beautiful stone steps to the castle entrance where you are greeted by one of the Guardians who escorts you to a back gallery, closed to the public. The room is musty and looks like it needs a lot of repair. The Guardian then shows you a wall where someone has scribbled numbers on the antique silk wall coverings. To earn your first rock carving, you’ll need to decipher the passphrase: