This is not a museum, this is an abandoned part of the huge system of labyrinths that you will visit.
All time temperature inside 13-14 degrees. It can be a bit dirty, depends on how you will move.
Sporty/comfortable shoes preferred, not high heels please.
If you have something for light wear for head and something like jacket it is the best.
With transport, it will take maximum 4 hours. The underground tour duration is 2 hours.
Service animals allowed. Public transportation options are available nearby. Specialized infant seats are available. Not recommended for travelers with spinal injuries. Suitable for all physical fitness levels. Comfortable shoes (Floor is not very flat).. Not recommended for participants with back problems (Few very short places with ceiling around 1 meter high).
Bicycle parking of McDonald's which is close to the main railway station.