I first traveled Mexico's Royal Road, the Camino Real de Tierra Adentro, in 1998 as part of a church mission trip which took me from El Paso by road to Durango. It's a shame I wasn't particularly aware of the significance of the route at the time, and I didn't pay much attention to the historic center of Durango. I corrected this oversight on a visit to Mexico City almost 20 years later in January 2017. I wasn't content to count the Zócalo as the only representation of this World Heritage Site, which includes 60 different sites related to the historic road, so I took a day trip out to Tepotzotlán, a small, charming city just north of the capital. Tepotzotlán is home to the former college of San Francisco Javier which in the 16th century trained Jesuit priests who would later serve throughout "New Spain". This inscribed site highlights the religious importance of the Camino Real. It is now also home to an incredible museum dedicated to the Viceroyalty of New Spain. The museum showcases liturgical art and artifacts and colonial furniture and collections amidst the many rooms in the historic complex. Most spectacular is the gilded excess of the Church of San Francisco Javier, an amazing sight to behold. If you have time in Mexico City, I highly recommend a day trip to Tepotzotlán to see this museum.

Logistics: There are direct buses from Mexico City (via the bus stations next to the Cuatro Caminos and Rosario metro stations) to Tepotzotlán (make sure to get off at the city center), but it can also be reached via private transportation.