Exercises in filming architecture and townscapes in April 2007: 1. Riddarhuset (House of Nobility), 17th century - the parliament had four houses until 1866: Nobility, Clergy, Burghers and Peasants. Architects: Simon and Jean de la Vallé. 2. Trångsund with Oxenstiernska palatset (Oxenstierna palace) in the background.