The vast revitalized riverfront area stretches along the three Prague embankments. The completed first phase is Prague's largest post-revolutionary investment in public space, the first with such sociocultural impact. It focused on the reconstruction of 20 vaults in the riverside wall allowing maximum contact with the river. The vaults will serve as cafes, workshops, galleries and public toilets. 6 vaults are accessible by elliptical pivoting windows that are probably the largest in the world.