Jefferson Pier
...that Jefferson Pier in Washington, D.C. was a survey monument for the first meridian of the United States, replacing one set by Thomas Jefferson in 1793, and that it was later used as a mooring bollard on the Potomac River?
...that <b id="mwAX8"><a href="./Jefferson_Pier" id="mwAYA" rel="mw:WikiLink" title="Jefferson Pier">Jefferson Pier</a></b> in <a href="./Washington,_D.C." id="mwAYE" rel="mw:WikiLink" title="Washington, D.C.">Washington, D.C.</a> was a <a href="./Benchmark_(surveying)" id="mwAYI" rel="mw:WikiLink" title="Benchmark (surveying)">survey monument</a> for the first <a href="./Meridian_(geography)" id="mwAYM" rel="mw:WikiLink" title="Meridian (geography)">meridian</a> of the <a href="./United_States" id="mwAYQ" rel="mw:WikiLink" title="United States">United States</a>, replacing one set by <a href="./Thomas_Jefferson" id="mwAYU" rel="mw:WikiLink" title="Thomas Jefferson">Thomas Jefferson</a> in <a href="./1793" id="mwAYY" rel="mw:WikiLink" title="1793">1793</a>, and that it was later used as a <a href="./Bollard" id="mwAYc" rel="mw:WikiLink" title="Bollard">mooring bollard</a> on the <a href="./Potomac_River" id="mwAYg" rel="mw:WikiLink" title="Potomac River">Potomac River</a>?