The Sassi [ˈsas.si] and the Park of the Rupestrian [ruːˈpɛstriən] Churches of Matera [maˈte.ra] - Italy

Rupestrian - adj: (of art) done on rock or cave walls.

https://whc.unesco.org/en/list/670

This is the most outstanding, intact example of a troglodyte settlement in the Mediterranean region, perfectly adapted to its terrain and ecosystem. The first inhabited zone dates from the Palaeolithic, while later settlements illustrate a number of significant stages in human history. Matera is in the southern region of Basilicata. 2024-04-22

WHS