Panoramic view of the town of Uchisar with its old houses and ancient cave dwellings in the volcanic tufa, Cappadocia, Anatolia, Turkey, Asia Minor, Asia

The town of Orchisar, showing the old tunneled houses dug into the volcanic rock, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia

Cave wine shops on Rue de la Cadene in this historic town and famous Bordeaux red wine region, Saint Emilion, Gironde, France, Europe

Altar candles in the Cave where Bernadette Soubirous had her Marian apparitions of our Lady of Lourdes in the French town of Lourdes, Hautes-Pyrenees, France, Europe

View across rooftops to cave houses in the troglodyte district, Guadix, Granada, Andalucia (Andalusia), Spain, Europe

Dusk lights over Manarola seen from a sea cave, Cinque Terre, UNESCO World Heritage Site, La Spezia province, Liguria, Italy, Europe

Manarola at dusk view from a grotto, Cinque Terre, UNESCO World Heritage Site, La Spezia province, Liguria, Italy, Europe

Copper mines in the former French mining town of Santa Rosalia, Baja California Sur, Mexico, North America

Cueva de las Manos (Cave of Hands), UNESCO World Heritage Site, a cave or series of caves located in the province of Santa Cruz, 163 km south of the town of Perito Moreno, Patagonia, Argentina, South America

Cueva de las Manos (Cave of Hands), UNESCO World Heritage Site, a cave or series of caves located in the province of Santa Cruz, 163 km south of the town of Perito Moreno, Patagonia, Argentina, South America

Cueva de las Manos (Cave of Hands), UNESCO World Heritage Site, a cave or series of caves located in the province of Santa Cruz, 163 km south of the town of Perito Moreno, Patagonia, Argentina, South America

Cueva de las Manos (Cave of Hands), UNESCO World Heritage Site, a cave or series of caves located in the province of Santa Cruz, 163 km south of the town of Perito Moreno, Patagonia, Argentina, South America

Sunrise on the village of Manarola from a sea cave, Cinque Terre, UNESCO World Heritage Site, Liguria, Italy, Europe

Sunrise on the village of Manarola from a sea cave, Cinque Terre, UNESCO World Heritage Site, Liguria, Italy, Europe

Sassi di Matera, UNESCO World Heritage Site, Basilicata, Italy, Europe

Sassi di Matera, UNESCO World Heritage Site, Basilicata, Italy, Europe

Sassi di Matera, UNESCO World Heritage Site, Basilicata, Italy, Europe

Illuminated underground karez (water canals) in the oasis town of Turpan, Silk Road, Xinjiang, China, Asia

Houses, Sorano, Tuscany, Italy

Aerial of Sassi di Matera in fog, UNESCO World Heritage Site, Basilicata, Italy, Europe

View towards the Cave of the Apocalypse Church, Patmos Island, Dodecanese, Greek Islands, Greece, Europe

Cave dwellings and town from the suburb, Barrida des Cuevas, Guadix, Andalucia, Spain, Europe

View over the village of Rhumsiki from a cave, Mandara mountains, Far North province, Cameroon, Africa

View towards the Panagia Spiliani, Blessed Virgin Mary of the Cave Monastery, Mandraki, Nisyros Island, Dodecanese, Greek Islands, Greece, Europe

View towards the Panagia Spiliani, Blessed Virgin Mary of the Cave Monastery, Mandraki, Nisyros Island, Dodecanese, Greek Islands, Greece, Europe

Cave dwellings, Sasso Barisano, UNESCO World Heritage Site, Matera, Basilicata, Puglia, Italy, Europe

Underground cave dwelling, Matmata, Tunisia, North Africa, Africa

Cave of skulls and bones, Opdas Cave Mass Burial, 500-1000 years old, Kabayan Town, The Cordillera Mountains, Benguet Province, Luzon, Philippines, Southeast Asia, Asia

Cave mummies with unique mummification process including internal organs, Kabayan Town, The Cordillera Mountains, Benguet Province, Luzon, Philippines, Southeast Asia, Asia

Tourists in paddle boat at entrance to Riverine Cave. longest navigable river traversed tunnel in the world, Subterranean River National Park, Sabang Town, Palawan, Philippines, Southeast Asia, Asia

Oak barrels of Rioja wine at Carlos San Pedro Bodega winery in medieval town of Laguardia in Basque country, Spain

Cave (wine shop) on old Rue de la Cadene in this historic town and famous Bordeaux red wine region, Saint Emilion, Gironde, France, Europe

Wat Swannakuha, cave temple in Phang Nga town area in Thailand, Southeast Asia, Asia

Old Cave houses in Guadix, Andalucia, Spain, Europe

Inside Basílica de Santa María la Real de Covadonga catholic church in Cangas de Onis, Picos de Europa, Asturias, Spain, Europe. In 1777 a fire destroyed the old temple, which stood adjacent to the Holy Cave where Our Lady of Covadonga is revered. It was then decided to raise a new church as a monumental sanctuary, raising donations from all of Spain; the plan was opposed by the local council, as the canons wanted to rebuild the temple of the Holy Cave and build an ambitious sanctuary that had once been designed by Ventura Rodríguez, but never completed. One century later, the project was resumed by King Alfonso XII of Spain, who was interested in completing this work. The classic design of Ventura Rodríguez was very difficult and expensive and was replaced by a new neo-Medieval design.

Our Lady of Covadonga. The Blessed Virgin Mary, and a Marian shrine devoted to her at Basílica de Santa María la Real de Covadonga catholic church in Cangas de Onis, Picos de Europa, Asturias, Spain, Europe. In 1777 a fire destroyed the old temple, which stood adjacent to the Holy Cave where Our Lady of Covadonga is revered. It was then decided to raise a new church as a monumental sanctuary, raising donations from all of Spain; the plan was opposed by the local council, as the canons wanted to rebuild the temple of the Holy Cave and build an ambitious sanctuary that had once been designed by Ventura Rodríguez, but never completed. One century later, the project was resumed by King Alfonso XII of Spain, who was interested in completing this work. The classic design of Ventura Rodríguez was very difficult and expensive and was replaced by a new neo-Medieval design.

Uchisar, Cappadocia, Turkey

Sitting on the paradise beach of Kroreza or Krorez in a cave on the Albanian riviera in Sarande, Albania, Europe

Tourist stands inside the arc natural cave in portocolom, mallorca, admiring the scenic view of a lighthouse across the blue waters

Princess cave at Phra Nang beach near Krabi, fertility, fertility temple, penis, dildo, penis grotto, phallus, phallus symbol, symbol, religion, pilgrimage site, faith, superstition, place, pilgrimage, Buddhism, Buddhist, cave, statues, sculpture, replica, Eros, symbolic, tradition, traditional, pilgrimage, travel, tourism, culture, figure, Krabi, Thailand, Asia

An evening view of the buildings of the old town called Sassi, panoramic view, Matera, Italy, Europe

African penguin (Spheniscus demersus), adult, looks from breeding cave, beach, on land, Boulders Beach, Simon's Town, Western Cape, South Africa, Africa

Cave architecture along an elongated rock formation, embedded in a green natural backdrop with road, aerial view, cave town, cave monastery, Vardzia, Vardzia, Samtskhe-Javakheti region, Samtske Javakheti, Lesser Caucasus, Georgia

Caves lined up in a massive rock face, surrounded by green areas, aerial view, cave town, cave monastery, Vardzia, Vardzia, Samtskhe-Javakheti region, Samtske Javakheti, Lesser Caucasus, Georgia

Historic architecture with bells and arcades, embedded in rocky structures, aerial view, Church of the Assumption, cave town, cave monastery, Vardzia, Vardzia, Samtskhe-Javakheti region, Samtske Javakheti, Lesser Caucasus, Georgia

Cosy cave dwelling with rustic style and furniture, surrounded by plants and rocky surroundings, aerial view, inhabited monk caves, cave town, cave monastery, Vardzia, Vardzia, Samtskhe-Javakheti region, Samtske Javakheti, Lesser Caucasus, Georgia

Ancient cave city with branching paths and stairs embedded in the rocky landscape, aerial view, cave city, cave monastery, Vardzia, Vardzia, Samtskhe-Javakheti region, Samtske Javakheti, Lesser Caucasus, Georgia

Medieval historic centre at dusk, Sassi di Matera, at back cathedral, cultural capital 2019, Matera, province of Basilicata, Italy, Europe

Medieval Old Town, Sassi di Matera, UNESCO Cultural Capital 2019, Matera, Province of Basilicata, Italy, Europe

View across the town from the viewpoint at Piazzetta Pascoli, dusk, Sassi di Matera, cave dwellings, Matera, Basilicata, Italy, Europe

Cave complex town of Uplistsikhe, since 10th Century BC, hall of Tamara, Georgia, Eurasia

City view, Matera at night, Matera province, Basilicata, Italy, Matera, Basilicata, Italy, Europe

Entrance to a cave, Gutenberg Cave, Swabian Alb, village of Gutenberg, district of the municipality of Lenningen, Baden-Wuerttemberg, Germany, Europe

Old dwellings cut into the rocks near the historic city centre of Dubrovnik, Ragusa, Dubrovnik-Neretva, Dalmatia, Croatia, Europe

Bronze figure in Matera, Matera Province, Basilicata, Italy, Matera, Basilicata, Italy, Europe

Bronze figures in Matera, Matera province, Basilicata, Italy, Matera, Basilicata, Italy, Europe

Bronze figure in Matera, Matera Province, Basilicata, Italy, Matera, Basilicata, Italy, Europe

City view, Matera at night, Matera province, Basilicata, Italy, Matera, Basilicata, Italy, Europe

Bronze figure in Matera, Matera Province, Basilicata, Italy, Matera, Basilicata, Italy, Europe

Cave complex town of Uplistsikhe, since 10th Century BC, Georgia, Eurasia

Cave complex town of Uplistsikhe, since 10th Century BC, Georgia, Eurasia

Cityscape, Matera, Province of Matera, Basilicata, Italy, Matera, Basilicata, Italy, Europe

Cityscape, Matera, Province of Matera, Basilicata, Italy, Matera, Basilicata, Italy, Europe

City view, Matera at night, Matera province, Basilicata, Italy, Matera, Basilicata, Italy, Europe

Dining rooms of the hotel Le Grotte della Civita, It is a hotel housed in ancient cave houses by the projects of "Sextantio", Matera, Basilicata, Italy, Europe

Uummannaq town on Uummannaq Island. America, North America, Greenland, Denmark

Dining rooms of the hotel Le Grotte della Civita, It is a hotel housed in ancient cave houses by the projects of "Sextantio", Matera, Basilicata, Italy, Europe

Dining rooms of the hotel Le Grotte della Civita, It is a hotel housed in ancient cave houses by the projects of "Sextantio", Matera, Basilicata, Italy, Europe

A votive aedicule depicting the Madonna in one of the main streets of the Sassi in Matera. The Sassi di Matera are ancient cave dwellings in the Italian city of Matera, Basilicata. Situated in the old town, they are composed of the Sasso Caveoso and the later Sasso Barisano. Matera, Basilicata, Italy, Europe

Amazing coastline of Polignano a Mare, Italy. Beach and beautiful summer sky.

Dining rooms of the hotel Le Grotte della Civita, It is a hotel housed in ancient cave houses by the projects of "Sextantio", Matera, Basilicata, Italy, Europe

Ancient entrance gates to the cave houses in Matera into the Sassi. The Sassi di Matera are ancient cave dwellings in the Italian city of Matera, Basilicata. Situated in the old town, they are composed of the Sasso Caveoso and the later Sasso Barisano. Matera, Basilicata, Italy, Europe

Dining rooms of the hotel Le Grotte della Civita, It is a hotel housed in ancient cave houses by the projects of "Sextantio", Matera, Basilicata, Italy, Europe

Ancient entrance gates to the cave houses in Matera into the Sassi. The Sassi di Matera are ancient cave dwellings in the Italian city of Matera, Basilicata. Situated in the old town, they are composed of the Sasso Caveoso and the later Sasso Barisano. Matera, Basilicata, Italy, Europe

Dining rooms of the hotel Le Grotte della Civita, It is a hotel housed in ancient cave houses by the projects of "Sextantio", Matera, Basilicata, Italy, Europe

The Roman gate view from the interior of the site, Perge, Turkey,Europe

Dining rooms of the hotel Le Grotte della Civita, It is a hotel housed in ancient cave houses by the projects of "Sextantio", Matera, Basilicata, Italy, Europe

Ancient entrance gates to the cave houses in Matera into the Sassi. The Sassi di Matera are ancient cave dwellings in the Italian city of Matera, Basilicata. Situated in the old town, they are composed of the Sasso Caveoso and the later Sasso Barisano. Matera, Basilicata, Italy, Europe

Dining rooms of the hotel Le Grotte della Civita, It is a hotel housed in ancient cave houses by the projects of "Sextantio", Matera, Basilicata, Italy, Europe

Detail of the ancient pavement inside one of the rooms of the hotel Le Grotte della Civita, it is a hotel housed in ancient cave houses by the projects of "Sextantio" Matera, Basilicata, Italy, Europe

Interior of Schlossberg Caves in Homburg, Saarland, Germany

Tourist at castle mountain caves, Homburg, Saarland, Germany