Rigsdagen (Danish pronunciation: [ˈʁisˌtɛˀn̩]) was the name of the national legislature of Denmark from 1849 to 1953. Rigsdagen was Denmark's first parliament, and it was incorporated in the Constitution of 1849. It was a bicameral legislature, consisting of two houses, the Folketing and the Landsting. The distinction between the two houses was not always clear, as they had equal power. In 1953, a new constitution was approved by referendum and adopted, with the result that Rigsdagen and the Landsting were eliminated in favor of a unicameral legislature under the name of the Folketing. Rigsdagen, like today's Folketing, was located in Christiansborg Palace in the centre of Copenhagen.