Public transportation options are available nearby

Not recommended for pregnant travelers

Not recommended for travelers with poor cardiovascular health

Suitable for all physical fitness levels

Walking tour with live guide commentary (language option)

Not possible for wheelchair or baby stroller due to walking / stairs

Not possible for people with any walking disability , heart issue

Not recommended for pregnant travelers, claustrophobia, similar

For safety it is required to speak the chosen language of the tour

Not for pets, smallest infants or children with attention disorder

Not recommended for smallest children under the school age

Not allowed to translate during the tour to other languages

Not allowed to disturb the tour by any disruptive behavior

Not allowed to join the tour under alcohol or drug influence

Once the tour left the start, it is not guaranteed to join the group

Tour duration might vary +- 10/15min depending the group size

Not for bachelor parties, costumed groups, also no smoking

Online tickets can be made up to 30 mins before the tour start

Comfortable shoes, normal walking footware recommended

Photos are ok but video recording is only with guide approval

not for people with claustrophobia, serious heart issues, similar

For a full refund, cancel at least 24 hours before the scheduled departure time.