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Machu Picchu - The Incas' Architectural Masterpiece

November 12, 2025

The Inca city of Machu Picchu in Peru has been uninhabited for centuries. But it is nevertheless well preserved.

https://p.dw.com/p/53FYE
Aerial view of the Machu Picchu site with its ruins and terraced architecture
Image: Kwanza

Discovered at the beginning of the 20th century, it attracts around 1.5 million visitors from all over the world every year.

Aerial view of the Machu Picchu site with its ruins and terraced architecture
Image: Kwanza

At an altitude of more than 2,400 meters, the Incas succeeded in building a masterpiece of architecture and engineering. Located on a mountain ridge in the Andes, it is a place in perfect harmony with nature.

Close-up of a house wall showing the intricate construction technique used by the Incas.
Image: Kwanza

The several dozen buildings of Machu Picchu cover 10 hectares. Their interlocking stone construction has withstood centuries of heavy rainfall and frequent landslides. 

An example of the knot system. Various other strings of different lengths hang from one string, each with different knots.
Image: Kwanza

The Incas built the city in the 15th century. They did not have a writing system in the conventional modern sense. Instead, they developed a unique recording system consisting of knotted strings, known as "quipus."

3D animation showing the angle of incidence of sunlight in a building at Machu Picchu.
Image: Kwanza

With their advanced technical skills, they succeeded in building complex drainage systems and designing buildings based on a map of the heavens.

Thanks to the research and findings of experts and spectacular 3D animations, some of the secrets behind the construction of Machu Picchu can now be revealed, allowing us to discover the genius of the Inca builders.
 

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