Today, the bell rings only to mark special holidays such as Easter and Christmas. But the bell has a ‘darker’ side. Legend has it that if the clapper (srdce – i.e. heart – in Czech) falls out, bad luck will strike and not only for the person who happens to be beneath it. The clapper has fallen out five times, in the years 1670, 1734, 1797, 1819 and 2002. The last time coincided with Prague’s 2002 floods, the largest flood since 1845 – though the clapper remained in place that time.