To the west of downtown Linz is a total of 14 km of tunnels, most of which date back to World War II.
Linz Linien: 27 - Hopfengasse
http://www.limonistollen.at/termine/
€19 per person
Somewhat suitable for wheelchairs: Assistance is sometimes necessary. The measurements do not (fully) conform to the legally stipulated ÖNORM.