Passport/Visa Requirements: Passports and return tickets required for citizens of U.S. and Canada.

Population: 3,406,000

Languages: German. Many Berliners speak (or at least understand) English. Turkish is also widely spoken.

Currency: Euro

Predominant Religion: Christian (Roman Catholic, Protestant)

Time Zone: 1 hour ahead of Greenwich Mean Time (+1 GMT). Six hours ahead of EST. (+6EST). Daylight Saving Time is observed from the end of March to the end of October.

Voltage Requirements: 220 volts/50 Hz

Phone Codes: 49, country code; 30, city code