There are many interesting sights throughout the city. There is the royal area with its palaces. The white stone buildings are decorated with carvings. There are grand temples, like the Temple of the Sun. Visitors can view what is left of the tower where soldiers stood guard. There are stone pyramids where royal people were buried.
–"Machu Picchu: A City in the Sky"
Summarize the passage by including the central idea and the most important supporting details.
