Machu Picchu is an Incan
city high in the Andes Mountains in Peru. We chose not to hike all the way there
and instead took the railway along the Urubamba River valley. It was built in
the 15th century and later abandoned. It’s renowned for its sophisticated
dry-stone walls that fuse huge blocks together like intricate puzzles without
the use of mortar. Religious structures were arranged with astronomical
alignments and panoramic views. Their purpose and use are still a mystery today.