Everyone tells you Machu Picchu is about the view at the top. They’re wrong. It’s about the two days before it.

I did the trek instead of the train. Bad idea at first. I live near sea level and the trail starts around 8,000 feet and keeps climbing. Day one my legs were fine and my lungs were furious. You can’t push through altitude. Your body just says no, politely, by making you dizzy. So you slow down. You drink water you don’t feel like drinking. You eat coca leaves the guide hands you and you stop pretending you’re in a hurry.

That was the whole lesson, really. The mountain sets the pace and you agree to it.

The ruins themselves are quieter than the photos suggest. You come over the last ridge and the city is just sitting there in the clouds, terraced into a slope that should be impossible to build on. The Inca cut the stones so tight you can’t slide paper between them. No mortar. Six hundred years of earthquakes and the walls haven’t moved. They built for the long run, on purpose.

A few things I’d tell anyone going:

  • Give yourself two days in Cusco first. Altitude is not a suggestion. Land, do nothing, let your blood catch up.
  • Take the trek if your knees allow it. The arrival hits differently when you earned the last ridge.
  • Go early. First entry, before the trains unload. For about an hour the place is yours and the light is soft.
  • Bring cash. The small towns on the way run on it.

I think about those walls a lot. Most of what I build is meant to last a season. The Inca were building for grandchildren they’d never meet. Different time scale, same idea: cut it tight, set it on solid ground, and it holds.