Advice against padlocks on <a href="//commons.wikimedia.org/wiki/Ponte_Vecchio" title="Ponte Vecchio">Ponte Vecchio</a> (Old Bridge), <a href="//commons.wikimedia.org/wiki/Florence" class="mw-redirect" title="Florence">Florence</a>, Italy. Closing a padlock and trowing the key into the river was a popular tradition followed in several towns by militarymen who had completed their compulsory service term.
<a href="//commons.wikimedia.org/wiki/User:Sailko" title="User:Sailko">Sailko</a>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>