Christiansborg Palace, Denmark

Christiansborg Palace, on Copenhagen's Slotsholmen islet, is Denmark's seat of power, housing the Danish Parliament (Folketing), Supreme Court, and Prime Minister's Office, uniquely blending all three branches of government in one building, along with Royal Reception Rooms. This Neo-Baroque marvel is the fifth palace on the site, rising from the ruins of earlier structures and reflecting Danish history through its resilient architecture and features like the stunning Queen's Tapestries and city views from its tower

The Palace is home to three supreme powers: the executive power, the legislative power, and the judicial power. It is the only building in the world that houses all three of the country's branches of government.