The CIA's World Factbook Travel Facts offer fact sheets with information on over 150 countries. Each sheet includes:

• the current U.S. State Department Travel Advisory
• passport and visa requirements
• the location of the U.S. Embassy and Consulate
• what vaccinations, if any, are needed
• the country's climate
• the currency used
• electricity, voltage, and plug types
• major languages spoken
• religions practiced
• time difference
• potable water, or if visitors should opt for bottled water
• whether visitors can drive in that country, and which side of the road to drive on
• notes on cultural practices
• the country telephone code
• local emergency phone numbers

Each sheet also includes links to the World Health Organization, U.S. State Department travel information, and instructions on obtaining an international driving permit.