England and France persuaded Sweden to fortify the inlet at Fårö with artillery batteries and naval mines.

[1] After the fortress was closed down and was taken over by the Swedish Prison and Probation Service in 1919, a penitential center was establishment.

[1] In 1993, the National Property Board of Sweden took over the administration of the batteries which until that date had belonged to the Swedish Fortifications Agency.

Under the company name Fårösund Fästning AB, with business owner Peter Alvérus, it began in 2004 to build a hotel in and around battery I.

[5] On 17 October 2012, Fårösunds fästning hotell och restaurang AB filed for bankruptcy at Stockholm District Court.