Links to Museum Websites and Virtual Museums
The Prado Museum in Madrid, Spain
https://www.museodelprado.es/
The National Gallery in Great Britain
http://www.nationalgallery.org.uk/
The Smithsonian National Institute in Washington, D.C.
www.si.edu
The Guggenheim Museum in New York City
https://guggenheim.org
The Metropolitan Museum in New York City
https://www.metmuseum.org
Also, goodhousekeeping.com has a list of 30 virtual museums across the world.
www.goodhousekeeping.com