Wikipedia: Baroque Architecture - An illustrated history and description of the style. - http://en.wikipedia.org/wiki/Baroque_architecture
History of Baroque Architecture - Photographs of several notable Baroque churches in Rome. Part of History of Western Architecture from the Leo Masuda Architectonic Research Office. - http://web.kyoto-inet.or.jp/org/orion/eng/hst/baroque.html
Triumph of the Baroque, Architecture in Europe: 1600-1750 - A virtual tour of the exhibition at the National Gallery of Art, Washington, United States, 21 May - 9 October 2000. - http://www.nga.gov/exhibitions/2000/baroque/splash.htm
17th-Century Italian Architecture - San Jose State University provides an extensive gallery of expandable images, accessed via pull-down menu and selection from an array. Basic information is given for each. - http://worldart.sjsu.edu/prt82*1$596
Itineraries of Baroque Art - Travel Italy provides an illustrated taster of the flamboyant Baroque architecture of Turin, Milan, Genoa, Rome, Naples, Lecce, Palermo and Cagliari. - http://www.travel.it/archaeol/baroc/baring.htm
St Paul's Cathedral, London - The official site of the magnificent Baroque church designed by Sir Christopher Wren in 1673. It has an illustrated chronology and 360-degree panoramas that require QuickTime VR. - http://www.stpauls.co.uk/
17th-Century Architecture - Images from Prof Jeffery Howe, Boston College, of Rubens' houses and the Church of St Charles Borromeo in Antwerp, Chateau Vaux-le-Vicomte and Versailles, France. - http://www.bc.edu/bc_org/avp/cas/fnart/arch/17arch_europe.html
Versailles - Elegant bilingual official site offering history, guided tour via an interactive map, 360-degree panoramas, gallery of masterpieces and visitor information. - http://www.chateauversailles.fr/
Baroque Architecture - Images and information on buildings in the Baroque style and their architects, provided by Great Buildings Online. - http://www.greatbuildings.com/types/styles/baroque.html
Renaissance and Baroque Architecture - Collection of expandable images used in a course at the Department of Architectural History, University of Virginia, covering Italy, France and England. - http://www.lib.virginia.edu/dic/colls/arh102/index.html