Helsinki’s underground spaces have been of increasing international interest. Requests for visits come almost daily to the author of this brochure alone. At the same time, safety regulations for underground facilities – especially for technical tunnels – have tightened considerably from previous years.
The City of Helsinki has limited capabilities for organising visits. However, this brochure lets visitors make independent exploration visits to underground spaces, send direct requests to the operators/ owners of the underground spaces, and gain information about the underground facilities and practices related to them in advance.
The brochure contains information about:
- underground Helsinki in general
- spaces that you can explore on your own
- spaces that require authorisation from the space’s operator/owner and a form to be completed by the visitor
- spaces that cannot be visited
- some upcoming spaces
- the centralised management and distribution of ground wires, cables, underground structures and spaces, as well as soil information
