In 1998, I was fascinated (okay, obsessed) with Scottish medieval history and took a month to backpack around Scotland. In my world, the oldest ruins I could visit dated from the early 17th century. In Glasgow, I stepped into a cathedral that dated back to the 12th century. Weeks later, I walked through Cawdor Castle, built in the 14th century, and continually inhabited since.

I had absolutely no idea until today that sometime between the building of these structures, the ancient peoples of North America’s Sonoran desert were constructing equally impressive structures that would endure through the centuries. One of the most impressive remains of this civilization are the Casa Grande structure and surrounding village site, preserved as the Casa Grande Ruins National Monument.

In one of the harshest environments in the world, these ancient people built the kind of civilization that existed all over the world at this time. Why am I so surprised to find such evidence in North America? The well-constructed buildings, impressive system of irrigation ditches, and beautiful artwork, in the form of jewellery, pottery, and weaving, point to a civilization that had evolve well beyond basic subsistence levels.

It is not known exactly what the Casa Grande structure was used for, perhaps as an administrative centre or food storage facility. It is so well constructed that no repairs or maintenance have needed to be done on the structure since it was deemed a protected site in the late 19th century!

This morning’s excursion to the Casa Grande ruins was a revelation. I’m thrilled that I took the detour!