Underground Built Heritage includes historic underground structures like catacombs, shelters, and tunnels.
These spaces uncover hidden urban histories and cultural transformations.
Often overlooked, they are vital to understanding the past and local identity.
Preserving them means keeping memory alive for today’s communities.
Multilevel caves (> 20.5 km) with historic entrances, unique habitat for troglobitic species, example of regeneration and valorisation. UNESCO submitted 2015 (natural). Area: Postojna Caves, managed by a joint-stock company under the Regulation on Concession and generate social, economic and cultural development. Scale: Regional (112.000 inh). Projects: Municipal Spatial Plan (2010) and the Regional Development Programme of Notranjsko-Kraška region (2007-2013/ 2014-2020). Funding: Public
