Although the stone figures on the Charles Bridge never change their stoic poses, the mood on the bridge changes as frequently as a chameleon in a Crayola factory.
At dawn, the bridge is eerily silent. The touristic multitudes are still in their hotels nursing pilsener hangovers or else gorging themselves on their hotel's breakfast spread. The people that make their living on the bridge are methodically setting up shop; they are opening blankets on which to place their wares or setting up easels to show their art. The river gurgles beneath and sometime creates a fog which winds its way around the statues, often half obscuring their visages. This is the best time, in my opinion to see the bridge.
After the sun has offically made its appearance and now hangs high in the sky, the tourists enter. Beware of the following:
Americans with camcorders and fannypacks
Hordes of adolescents with matching orange backpacks traveling in a group of no less than fifty
Pickpockets and thieves looking for wallets and fannypacks
Aggressive vendors trying to sell you something that you could never hope to want or need.
As you may have already guessed, this is the worst time to go to the bridge, although it certainly was an experience.
At sundown the statues are as creepily silhouetted as they were in the morning. From the bridge, you can watch the sun set over Prague, as it lends pastel life to the surrounding shadow and stone. The vendors have packed up and left, but now the youth of Prague have taken over. They are sitting on the cobblestone on the bridge, consuming tobacco and beer in healthy amounts. At different spots on the bridge are various groups, usually singing or dancing along to guitar or drums or both. This is also a nice time to go to the bridge, if only to say, "I would have hung out here if I were younger."
Quick historical facts about the bridge:
It is named after the Holy Roman Emperor Charles IV, who appointed a German, Peter Parler, to build an effective bridge across the Vltava in 1357.
There are 30 statues of Baroque saints adorning the bridge, but most of these are recreations (The originals had to be removed to be protected from the elements).
The eighth statue on the right (coming from the Old Town side) is Jan Nepomunk, who was thrown off the bridge by King Wenceslas IV, for failing to betray Queen Sofie. It is the oldest statue remaining, designed in 1683.