Several seagulls fly around the Charles Bridge .The Charles Bridge (Czech Karluv most ) is the oldest bridge in Prague , Vltava river and through the Old Town to the Lesser Town . It is the second oldest existing bridge in the Czech Republic .Its construction started in 1357 with the approval of King Charles IV , and finished in the early fifteenth century . Since at the time was the only way to cross the river , the Charles Bridge became the most important communication channel between Old To