Oliver Cromwell's head
... that for over 20 years after his posthumous execution in 1661, Oliver Cromwell's head stood on a spike outside Westminster Hall?
... that for over 20 years after his <a href="./Posthumous_execution" id="mwDjI" rel="mw:WikiLink" title="Posthumous execution">posthumous execution</a> in 1661, <b id="mwDjM"><a href="./Oliver_Cromwell's_head" id="mwDjQ" rel="mw:WikiLink" title="Oliver Cromwell's head">Oliver Cromwell's head</a></b> <i id="mwDjU">(pictured)</i> stood on a spike outside <a href="./Westminster_Hall" id="mwDjY" rel="mw:WikiLink" title="Westminster Hall">Westminster Hall</a>?