Gothenburg's new cable car system will comprise one cable car line with four stations and six towers. It is one of a number of projects undertaken by the City of Gothenburg to mark its 400th anniversary in 2021. The cable car system, which will provide fast and efficient aerial transport across the city, will be the first new mode of public transportation in Sweden since the subway was introduced in Stockholm in the 1930s. The 3km long Gothenburg cable car line starts at Järntorget in the historic city on the south bank of the river, where it links to a bus and tram transfer node. It then crosses the river and continues to three further stations in the north of the city.