Old Wall
... that the Old Wall in Sofia, Bulgaria, popularly called the "Roman Wall", is in fact an Islamic religious structure from the 16th or 17th century?
... that the <b id="mwAUk"><a class="mw-redirect" href="./Old_Wall_(Sofia)" id="mwAUo" rel="mw:WikiLink" title="Old Wall (Sofia)">Old Wall</a></b> <i id="mwAUs">(pictured)</i> in <a href="./Sofia" id="mwAUw" rel="mw:WikiLink" title="Sofia">Sofia</a>, <a href="./Bulgaria" id="mwAU0" rel="mw:WikiLink" title="Bulgaria">Bulgaria</a>, popularly called the "Roman Wall", is in fact an <a href="./Islam" id="mwAU4" rel="mw:WikiLink" title="Islam">Islamic</a> religious structure from the 16th or 17th century?