Pan-American Highway
The Pan-American Highway is a network of roads stretching across the American continents and measuring about in total length. Except for a rainforest break of approximately , called the Darién Gap, the roads link almost all of the Pacific coastal countries 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 with conventional highway vehicles. Without an all-terrain vehicle, it is necessary to circumnavigate this terrestrial stretch by sea.
Gotthard Road Tunnel
Under construction since 2002 and opened on 1 June 2016, the Gotthard Base Tunnel (a second rail tunnel, long), is the world's longest. It was built for the use of trains travelling from northern Switzerland to the Ticino area and beyond.