After a night in Cusco, we flew to Lima, where we had a half day wait for our plane back to the USA. So we took a short tour of Lima. This is the main post office. (Maybe my grandfather Earl Saunders visited here. He spent a couple of years in South America in the 1920s, setting up the signal systems for the new railroads, perhaps including the one to Machu Picchu. And he was an avid stamp collector, coming back with stamps from all the countries where he worked.)