The Q'eswachaka Bridge is a suspended bridge made of natural fibers that spans the Apurimac River in Peru. It measures approximately 30 meters long and was constructed using ancient ecological designs and sustainability techniques using local Qoya fibers grown in the Andes. The local community gathers annually to restore the bridge during the traditional "Q'eswachaka" ceremony, embodying Inca culture and preserving cultural and social heritage. Building a bridge out of natural fibers is an example of the Inca's ecological and sustainable approach. Indeed, the use of natural materials minimizes environmental impact and preserves local resources, while providing the flexibility and resilience needed to withstand the region's extreme climatic conditions. The Q'eswachaka Bridge is also a symbol of the social and cultural ties among the region's peoples. Its preservation is a constant challenge, but thanks to the ongoing efforts of the local community, Peruvian authorities, and others, the last Inca bridge continues to be an important link for the region's inhabitants, while serving as a symbol of the ingenuity and wisdom of this civilization. In 2013, it was classified as a UNESCO World Heritage Site.