1.
Cave pool, Santorini, Greece
4.
Caves in Nottingham, England
5.
Hillside Home, Vals, Switzerland
6.
Cave homes, Cappadocia, Turkey
7.
House Cave, Sacromonte, Spain
10.
Vardezia cave city, Georgia
12.
The Brochs of Coigach, Scotland
13.
Beckham Creek Cave Lodge, Parthenon, Arkansas
14.
Sala Silvermine, Sweden
15.
Village of Kandovan, Iran
16.
Nas montanhas de Fafe, Portugal
17.
Dietikon, Switzerland
18.
Aloni house, Antiparos Island, Greece
19.
Bolton Eco House, England
20.
Malator in Druidstone, Wales
22.
Matmata village, Tunisia
23.
Cave House, Festus, Missouri
24.
House of Spiritual Retreat, Seville, Spain
26.
OUTrial House, Poland
27.
Dune House, Atlantic Beach