Unesco declared Machu Picchu a World Heritage Site in 1983. Since then, the organization requires Peru to comply with a series of guidelines to preserve the site.

and the dramatic Andean landscape in which it's situated all draw millions of travelers to Machu Picchu every year. Yet, a visit to the citadel is as much about the journey as it is about the ...

The final session in this unit crosses the Atlantic further west to the mountains of Peru where, at the mysterious Machu Picchu, we reconstruct an Inca astronomical Temple of the Sun amidst rock ...