Every year, local communities on either side of the Apurimac River Canyon use traditional Inka engineering techniques to rebuild the Q'eswachaka Bridge, near Cusco, Peru. The old bridge is taken down and the new bridge is built in only three days. The bridge has been rebuilt in this same location continually since the time of the Inka.
This delightful 3 minute video shows what a team work and community spirit can achieve in 3 days.