Beautiful Places in Czechia (Towns, villages, castles, palaces and cities) Prague's oldest bridge was built to replace the Judith Bridge that had been badly damaged by floods in 1342. Construction of the new bridge, originally called Stone Bridge or Prague Bridge, began in 1357 under the auspices of Charles IV and was finished in 1402. Since 1870 the bridge has been called Charles Bridge. View of Charles Bridge – the Most Beautiful Gothic Structure in the Prague , Czechia. Prague Castle is the largest coherent castle complex in the world, with an area of almost 70,000 m². Prague Castle was built in the ninth century for Prince BoĊivoj. However, the look of the castle changed drastically over the last 1,200 years, thanks to some Gothic renovations in the 14th century and a few more recent 20th century additions. Prague Castle was recognized as a UNESCO World Heritage site. Entrance at the Prague Castle . The Castle gates are crowned by copies of 18th-century statues of Fighting