Up until the mid-19th century, the only way to cross the Vltava River in Prague was to head over the gothic stone arches of the Charles Bridge. The project of King Charles IV, construction of the now iconic structure began in 1357 after a flood damaged the existing walkway. A short animation by Engineering and Architecture peers back into history to chronicle the centuries-old building process as it shows wooden trusses framing the structure and bricks seemingly sprinkling into place. While the video collapses decades of work into less than a minute, the Charles Bridge wasn’t complete until the early 15th century.