One man pays a visit to every unit in the national park system.
All 388. See his travel website.
Clearly this is a man who is a bit obsessive. His personal website tracks each of his 366 travel-related goals, from visiting all 131 North American telephone area codes designated by AT&T, to visiting some point worldwide whose name begins with each of the 26 letters of the alphabet, and consuming a McDonald’s menu item in every country in which it operates. Hogenauer even made a pilgrimage to the offices of R. R. Donnelley, the Lancaster, Pennsylvania, company that prints maps and pamphlets for each park, just to let them know he appreciated their efforts.