Directories, news and travel
•  Welcome.ToPuertoRico.org
•  Puerto Rico - Wikipedia
•  PRWow! portal, including directories, news, and information on Puerto Rico
•  Official Puerto Rico travel and tourism site
•  Puerto Rico travel guide from Wikitravel

Puerto Rican government
•  Official website (Spanish)

Country profiles
•  Encyclopaedia Britannica profile
•  CIA - The World Factbook

Photos
•  Directory of websites with photo galleries of Puerto Rico
•  Site dedicated exclusively to photos of Puerto Rico

Maps and aerial photos
•  Maps from Google Maps, Live Search Maps, WikiMapia, Yahoo! Maps, or MapQuest
•  Topographic maps from TopoZone
•  Landuse survey from GlobalGuide