Prague Castle & Charles Bridge - Prague Castle (Pražský Hrad) Is A Castle In Prague Where The Czech Kings, Holy Roman Emperors And Presidents Of Czechoslovakia And The Czech Republic Have Had Their Offices. The Czech Crown Jewels Are Kept Here. Prague Castle Is One Of The Biggest Castles In The World (according To Guinness Book Of Records The Biggest Ancient Castle) At About 570 Meters In Length And An Average Of About 130 Meters Wide. Charles Bridge (Karlův Most) Is A Famous Historical Bridge That Crosses The Vltava River In Prague, Czech Republic. Its Construction Started In 1357 Under The Auspices Of King Charles IV, And Finished In The Beginning Of 15th Century. As The Only Means Of Crossing The River Vltava (Moldau), The Charles Bridge Used To Be The Most Important Connection Between The Old Town, Prague Castle And Adjacent Areas Until 1841. Also This 'solid-land' Connection Made Prague Important As A Trade Route Between East And West Europe. The Bridge Was Originally Called The Stone Bridge (Kamenný Most) Or The Prague Bridge (Pražský Most) But Has Been The Charles Bridge Since 1870. Photo