The initial ideas for the construction of a First «railway», albeit as a funicular, began to evolve in the 1930s. A company was founded in 1938. However, the various projects ground to a halt, mainly because of the Second World War. After the end of the war, the Ludwig von Roll’schen Eisenwerke AG designed a completely new system for mountain «railways» that was used on First: the chairlift. The cost of such an installation was far lower than any other previously known mountain railway system. On December 1946, the two sections of Grindelwald-Oberhaus and Oberhaus-Bort, and on February 1947 the Bort-Egg section as well as the Egg-First section were handed over to the company. The official inauguration took place on 15 June 1947.
A development concept for the entire First area was elaborated in 1986. This included replacement of the chairlift with its open, side-facing chairs. Thanks to a slightly amended route and coordinated planning, construction of the 6-seater aerial gondola began on 7 June 1990 with the groundbreaking ceremony for Bort intermediate station. The old chairlift continued to operate unhindered until it finally closed on 18 August 1991. The new aerial gondola began operating in November 1991, covering the difference in height of 1,105 metres in 25 minutes.