What is a Point of Interest (POI)?

A Point of Interest, or POI, is a specific point location that someone may find useful or interesting. An example is a point on the Earth representing the location of the Space Needle, or a point on Mars representing the location of the mountain, Olympus Mons.

The term is widely used in Cartography, especially in electronic variants including GIS, and GPS navigation software. In this area the location of this point is called a waypoint.