The U.S. has more than 180,000 markers telling the nation's story, with over 35,000 groups and individuals contributing. The Historical Marker Database, launched in 2006, collects and shares these markers contributed by hobbyists.
Key Points
Over 180,000 active markers in the U.S.
Database launched in 2006 by J.J. Prats
Markers submitted by hobbyists and reviewed by editors
Pros
Preserves and shares historical information
Provides insight into the nation's history
Cons
Markers may sometimes be offensive or controversial