Kings, a saint and a kingfisher
On the east face, Charles IV and his son Wenceslas IV sit on either side of St Vitus, with Saints Adalbert and Sigismund above them. Look for the kingfisher, Wenceslas IV's symbol, carved among the decorations.
The gate at the Old Town end of Charles Bridge is one of the finest Gothic towers in Europe, and the place where Prague held off a Swedish army. Here's what you're looking at, and what to listen for when you get there.

On the east face, Charles IV and his son Wenceslas IV sit on either side of St Vitus, with Saints Adalbert and Sigismund above them. Look for the kingfisher, Wenceslas IV's symbol, carved among the decorations.
In the last days of the Thirty Years' War, Swedish troops took the castle side of the river and tried to cross. Students and townspeople held the tower; the western face, which took the fire, lost its statues.
Bohemian kings passed through this gate on their coronation route from the Old Town up to the castle, the Royal Way.
Peter Parler's workshop, for Charles IV; it was finished around 1380.
Yes, there's a gallery at the top reached by 138 steps, with a ticket.
Charles IV and Wenceslas IV with St Vitus, and Saints Adalbert and Sigismund above.