The <a href="https://en.wikipedia.org/wiki/Surrey_Iron_Railway" id="mwbg" rel="mw:WikiLink" title="Surrey Iron Railway">Surrey Iron Railway</a>, arguably the world's first public <a href="https://en.wikipedia.org/wiki/Rail_transport" id="mwbw" rel="mw:WikiLink" title="Rail transport">railway</a>, opens in south London, United Kingdom.