The National Tourist Routes are 18 highways in Norway designated for their picturesque scenery and tourist-friendly infrastructure, such as rest stops and viewpoints.
The experience is 'enhanced by innovative architecture and thought-provoking art'.
Six new routes will be available in 2021.
Sunvil has a 14-night self-drive holiday that takes in the Lofoten, Andoya and Senja, three of the country's National Tourist Routes as well as a stay in the university city of Tromso.
National Tourist Routes, the Nasjonale turistveger, are designated by the Norwegian Public Roads Administration for their picturesque scenery and tourist-friendly infrastructure, such as rest stops and viewpoints.
The routes cover 1,850 kilometres (1,150 mi) and are located along the West Coast, in Northern Norway and in the mountains of Southern Norway.
The authorities have coordinated the establishment of accommodation, cultural activities, dining, sale of local arts and crafts, and natural experiences along the tourist roads.
The overall goal of the project is to increase tourism in the rural areas through which the roads run.
The project started in 1994 and was initially limited to Sognefjellsvegen, Gamle Strynefjellsveg, Hardanger and the Helgeland Coast Route.
These were officially designated National Tourist Routes in 1997, and, the following year, the Storting decided to expand the project. Municipalities were asked to nominate roads, resulting in 52 nominees covering 8,000 kilometres (5,000 mi).
While most of the architecture has been designed by young Norwegians, French-American Louise Bourgeois and Swiss Peter Zumthor have designed stops in Varanger and Ryfylke.