Bulverket
... that thousands of logs that were the 12th-century wooden fort Bulverket, built in the middle of Sweden's Lake Tingstäde, can still be seen through the ice in winter?
... that thousands of logs that were the 12th-century wooden fort <b id="mwAcQ"><a href="./Bulverket" id="mwAcU" rel="mw:WikiLink" title="Bulverket">Bulverket</a></b>, built in the middle of Sweden's <a href="./Lake_Tingstäde" id="mwAcY" rel="mw:WikiLink" title="Lake Tingstäde">Lake Tingstäde</a>, can still be seen through the ice in winter?