Which country's parliament meets in the Storting?

Norway, and the Storting has an unusual claim: the Norwegian constitution of 1814 is the oldest still in force in Europe and the second oldest in the world after the American one. It was written in about five weeks by an assembly at Eidsvoll, in a scramble to establish independence as Denmark was forced to cede Norway to Sweden.

Independence did not stick immediately - Sweden invaded, and Norway kept its constitution and parliament under a Swedish king until 1905. The separation when it came was negotiated rather than fought, and the new state then held a referendum on whether to be a monarchy, and imported a Danish prince who insisted on the vote before accepting.

The Storting also awards the Nobel Peace Prize, which is the odd one out. Alfred Nobel's will assigned the science and literature prizes to Swedish institutions and the peace prize to a committee appointed by the Norwegian parliament, and he never explained why - the leading theories are that Norway had no great-power ambitions and that he admired its parliamentary politics. It means the most political of the prizes is decided by five people appointed by a national legislature, which is a recurring source of criticism whenever a choice is contentious.