General Reference: Travel Information
This site describes more than 3,600 Bed and Breakfast establishments in the United States, Canada, Mexico, and the Caribbean. Many pages allow you to reserve a room at the inn of your choice. There is also information on inns for sale.
CDC Travelers' Health
The Centers for Disease Control and Prevention provides health information on specific destinations on its web site, including the CDC-recommended vaccinations for each country or region.
Elderhostel is a non-profit educational and travel organization for adults 55 years and older.
Information on hotels, restaurants, and destinations around the world from these online versions of the popular travel guide series.
The Frommer's site offers travel information for locations worldwide. Linking to other travel sites, it offers purchase of its print guides as well.
National Park Service: ParkNet
ParkNet serves a guide to National Park Service facilities. Including maps, activities, usage statistics, and entry fee amounts, the site also makes available printable travel guides.