With its raucous beer halls, picturesque courtyards and cobble-stoned lanes, Prague has long been one of the most popular tourist destinations in Europe. The city was not at its brightest and best yesterday, however, as Japanese tourists struggled across the Charles Bridge against an oncoming rain storm. The bridge, which crosses the Vltava river in the Czech capital, will no doubt hold up against the torrential weather conditions -- given it was first constructed some 800 years ago.