"The Pan-American Highway system is mostly complete and extends from Fairbanks, Alaska in North America to Quellon, Chile in South America, though no route is officially defined in Canada and the United States. The Pan-American Highway passes through many diverse climates and ecological types, from dense jungles to cold mountain passes. Since the highway passes through many countries, it is far from uniform. Some stretches of the highway are passable only during the dry season, and in many regions driving is occasionally hazardous. Famous sections of the Pan-American Highway include the Alaska Highway and the Inter-American Highway, the latter being the section between the United States and the Panama Canal. This part is quite popular among US tourists driving into Mexico."