Monument to the Mersey Tunnel
... that the Monument to the Mersey Tunnel in Birkenhead was originally both a monument and a source of lighting, but now "merely serves as a memorial"?
... that the <b id="mwrQ"><a href="./Monument_to_the_Mersey_Tunnel" id="mwrg" rel="mw:WikiLink" title="Monument to the Mersey Tunnel">Monument to the Mersey Tunnel</a></b> in <a href="./Birkenhead" id="mwrw" rel="mw:WikiLink" title="Birkenhead">Birkenhead</a> was originally both a monument and a source of lighting, but now "merely serves as a memorial"?