INTERPRETATION is the Process of educating visitors to national parks and other Cultural or historical Facilities through the use of signs, markers, etc.
Other definition:
Interpretation is the print materials, signage, narration, guided tours, and anything that "interprets" the site for the visitor. Interpretation helps the customer "interpret" the experience and explains why a particular product is valuable. Interpretation adds value and meaning to the experience. Common interpretation techniques used in ecotourism include commentary on guided tours, presentations and discussions, drama performance, musical performance, brochures, signs, displays, and audiovisual presentations (NEAP, 2000).
Other definition:
Interpretation is an educational process that is intended to stimulate and facilitate people's understanding of place, so that empathy towards, conservation, heritage, culture and landscape is developed.
The Travel-Glossary: Everything about Travelling, Sightseeing and the World.