Foreign Exchange Rates - Universal currency converter, 180 currencies - same day rates.
Hostelling Internatonal - Information on hostels around the world.
Museums around the world - An eclectic collection of museums - arranged by country.
TripAdvisor - Reviews and opinions of hotels and attractions around the world.
US State Department - Information on international travel, passports, visas, and travel warnings.
Google Maps - Includes local business search capabilities, and satellite maps.
MapQuest - Good source for driving directions.
TerraServer - Aerial photographs and topographical maps.