Crossing the Vlatava: Charles Bridge--Dating from the 14th century, Charles Bridge (Karluv most), Prague's most celebrated structure, links Prague Castle to Staré Mesto. For most of its 600 years, the 510m (1,700-ft.) long span has been a pedestrian promenade, though for centuries walkers had to share the concourse with horse-drawn vehicles and trolleys. Today, the bridge is filled with folks walking among artists and busking musicians.
The best times to stroll across the bridge are early morning and around sunset, when the crowds have thinned and the shadows are more mysterious.
never been before, 2 nights stay, any "must see's" or tips on best bars or trips (quite fancy a river trip) thanks.