Hobby or obsession where you must reach the highest points in a given geographic area: in the United States, highpointers set out to bag the highest point in each of the fifty states. This could involve a drive on a highway (Delaware), a train ride (Mt. Washington, New Hampshire), a strenuous hike, or in the case of Washington, Oregon, Montana, and Wyoming, rock climbing and/or glacier travel. Alaska, of course, includes the world class mountain, Mt. McKinley. (Before you go: search and rescue operations by the Park Service in Denali are conducted on a discretionary basis. Bring a sweater.).
For the truly obsessed, highpointer Andy Martin publishes a guide to the highest points in America by county- all 3140 of them.

Because it's there.