"The Pan-American Highway is a network of roads nearly 48,000 kilometres (29,800 miles) in total length. Except for an 87 kilometre (54 mi) rainforest gap, called the Darién Gap, the road links the mainland nations of the Americas in a connected highway system. According to Guinness World Records, the Pan-American Highway is the world's longest "motorable road". However, because of the Darién Gap, it is not possible to cross between South America and Central America by traditional motor vehicle. The Pan-American Highway system is mostly complete and extends from Prudhoe Bay, Alaska, in North America to the lower reaches of South America. Several highway termini are claimed to exist, including the cities of Puerto Montt and Quellón in Chile and Ushuaia in Argentina. No comprehensive route is officially defined in Canada and the United States, though several highways there are called "Pan-American"."
This picture was sent in by GCB. He notes that "this restroom is very old, dirty and stinky."