Charles IV was a ruler with whom the Crown of Saint Wenceslas, the building of St. Vitus Cathedral and the stone bridge are associated in Prague.

Charles IV was a ruler with whom several buildings and objects from the 14th century in Prague's monuments are associated.
According to the Czech News Agency, in 1346 he had a crown made for his coronation as King of Bohemia, which took place the following year.[1] The Prague Castle Administration states that in 1344 he began construction of the Gothic St. Vitus Cathedral; its first builders were Matthias of Arras and later Peter Parler.[2] The monument catalogue of the National Heritage Institute states that Prague Castle was extended into a Gothic palace by Charles IV together with his son Wenceslaus IV.[3] According to the same catalogue, today's stone bridge in Prague was built in the time of Charles IV; its foundation stone was laid in 1357, and after the first designer the construction was led by Peter Parler.[4]