One of the most beautiful buildings in Stockhom. Designed by architect Simon de la Vallée and his son Jean de la Vallée, the Riddarhuset (House of the Nobility) was completed in 1674. For almost two centuries, noblemen gathered here to take political decisions. After the abolition of the Estates and the creation of a parliament in 1866 the nobility lost its political power, but even today representatives of the Swedish nobility meet here once every three years to discuss the activities of the Riddarhuset institutions.