The House at the French Crown has one entrance to Karlova Street, just before Charles Bridge. If you enter, you will reach a courtyard with galleries and on the other side you will come out to the calm Anenské náměstí.
The mathematician Johannes Kepler lived here between 1607 and 1612, at which time he defined the first two laws of motion of planets around the Sun (he is also interesting because he was the first to discover that the shape of snowflakes is always hexagonal).