White House
http://www.whitehouse.gov/history/whtour/
Smithsonian Institute
http://2k.si.edu/
WebMuseum
http://www.ibiblio.org/louvre/
Virtual Tours
http://www.virtualfreesites.com/tours.html
List of Virtual Museums
http://www.virtualfreesites.com/museums.museums.html
Chamber of the Holocaust
http://www.mznet.org/chamber/index.htm
Sistine Chapel
http://www.christusrex.org/www1/sistine/0-Tour.html
Ellis Island Photo Exhibit
http://cmp1.ucr.edu/exhibitions/immigration_id.html