Salt Lake City

Historic Fort Douglas.   A clickable map leads to photos and historical descriptions of this Salt Lake City military facility, which dates back to the Civil War era.   Named after Illinois Senator Stephen A. Douglas, most of the facility is now part of the Univesity of Utah.  [ccr]
http://www.facilities.utah.edu/fd/welcome/welcome.html

Mormon Sites.  A map-based tour of church-related sites in and near Temple Square.   Created by the Church of Jesus Christ of Latter-day Saints.  [ccr]
http://www.lds.org/placestovisit/region/0,10749,1779-1-1,00.html