The Houses of Parliament, also known as the Palace of Westminster, is considered the most important building in the United Kingdom. Gain a better understanding of its three central elements: the House of Commons, the House of Lords, and the Monarchy. As you explore the monument's historic interiors on your own with an audio guide, hear stories about the important figures that have walked its halls, as well as the process of decision-making and the daily life of the people who work here.