RoadmapGPS has free POI data for many metro areas in the United States.
Other sites on the internet with POI data include:
- GPS-POI-US – several collections of POI data for the United States, including red light cameras (for a fee)
- Lat-long.com has a database with over a million US locations
- DiscoveryOwners.com has location data for campgrounds, parks, and other sites that may be of interest to RV owners