Bing Travel - find hotels, flights, and car rentals; includes an airline price predictor to help you decide when to buy.
Booking Buddy - aggregator; searches hundreds of travel booking sites all at once for hotels, flights, and car rentals.
CDC - Travelers' Health - official U.S. government health recommendations for traveling.
Fodor's - travel information from the popular guide book publisher.
Frommer's - travel information from the popular guide book publisher.
Goway - offers a wide choice of travel ideas.
Kayak - aggregator; searches hundreds of travel booking sites all at once for hotels, flights, and car rentals.
Illinois State Parks - learn about Illinois state parks, natural areas, conservation areas, recreation areas, and fish and wildlife areas.
Lonely Planet Online - travel information from the Lonely Planet travel book series.
SeatGuru - find advice for choosing the best seats on airline flights.
Travel.state.gov - for citizens traveling abroad; includes information on passports and visas.
TripAdvisor - find reviews of hotels, attractions, and more. Also includes links to sites to book travel.
United States Parks - official website of the National Parks service; learn about national parks, news, and events.
Wikitravel - travel guides that anyone can write, add to, and edit.
Yelp. com - read and write reviews on hotels, restaurants, and other businesses.