View of Jaisalmer Fort, built in 1156 by Rawal Jaisal, which has 99 bastions around its circumference, Jaisalmer, Rajasthan, India

Jain Holy Hill and Temple complex, Mount Girnar, Junagadh (Junagarh), Gujarat, India

Jain Holy Hill and Temple complex, Mount Girnar, Junagadh (Junagarh), Gujarat, India

Jain Holy Hill and Temple complex, Mount Girnar, Junagadh (Junagarh) , Gujarat, India

The Abode of the Gods, there are over 863 temples on this most sacred of Jain Holy Hills, Shatrunjaya Hill, Palitana, Gujarat, India

Old City skyline with bagdirs windtowers, Yazd, Iran, Western Asia

Tenth century stone pagoda in Kaiyuan Temple, Quanzhou, Fujian, China

Eze and St. Jean-Cap-Ferrat, Cote d'Azur, Provence, France, Europe

A holy man and the 'Blue city' and fort, Jodhpur, Rajasthan State, India, Asia

St. Barbara Bastion and Barbierra Wharf, with St. Lucia church and Valletta (Valetta) behind, Malta, Europe

St. Stephen's Cathedral, Vienna, Austria

Azay le Rideau chateau, Loire Valley, UNESCO World Heritage Site, Centre, France, Europe

Stone hut below Mount Smiubelgen, 2016 m, Peer Gynt-hytta 2005, Rondane National Park, Oppland, Norway, Scandinavia, Europe

Autumn scene, Tanzhe Temple, Beijing, China, Asia

Humble Administrator's Garden, UNESCO World Heritage Site, Souzhou (Suzhou), China, Asia

Sao Vicente de Fora Church and the Alfama district in Lisbon, Portugal, Europe

Mother Church of San Giorgio, Melpignano, Lecce, Salento, Apulia, Italy

Gravina, Bari, Alta Murgia, Apulia, Italy

Skyline, Silves, Algrave, Portugal

Notre-Dame Cathedral, Rouen, Normandy, France, Europe

Aerial of trulli, Rione Monti, UNESCO, Alberobello, Bari, Apulia, Italy

Architecture and urban scenery in central Amsterdam, North Holland, The Netherlands

Ancient Mother Church, Massafra, Taranto, Apulia, Italiy

Monte Sant'Angelo, Foggia, Apulia, Italy

Castelo de Silves, Silves, Algrave, Portugal

Looking over the town of Volterra, Tuscany, Italy, Europe

Langenburg, Baden-Wurttemberg, Germany, Europe

Church of Maria Santissima Assunta, Spire of Raimondello, Soleto, Lecce, Apulia, Salento, Italy

Church of San Miguel de Lillo, UNESCO, Oviedo, Asturias, Spain

Junno District, Monte Sant'Angelo, Foggia, Apulia, Italy

Castelo de Silves, Silves, Algrave, Portugal

Co-cathedral of Ruvo di Puglia, Ruvo di Puglia, Bari, Apulia, Italy

Co-cathedral of Ruvo di Puglia, Ruvo di Puglia, Bari, Apulia, Italy

The Casino, west front, Monte Carlo, Monaco, Europe

View over houses and rooftops to Greek Orthodox Church of Saint Spyridon, village of Dhermi, Albania, Europe

Iglesia Santa Maria de la Concepcion, Valverde, El Hierro, Canary Islands, Spain, Europe

Inca Ruins of Ollantaytambo, Sacred Valley of the Incas (Urubamba Valley), near Cusco, Peru, South America

Trulli, Alberobello, UNESCO World Heritage Site, Puglia, Italy, Europe

Alberobello, typical houses, Apulia (Puglia), Italy

Bukit Lawang at sunrise, Gunung Leuser National Park, North Sumatra, Indonesia, Southeast Asia, Asia

View over the medieval center of the town of Nuremberg, Bavaria, Germany, Europe

The medieval town of Monsaraz, Alentejo, Portugal, Europe

Old Portuguese city, El Jadida, Atlantic coast, Morocco, Africa

View of the city from the roof of the Duomo (cathedral), Milan, Lombardia (Lombardy), Italy, Europe

The medieval town of Monsaraz, Alentejo, Portugal, Europe

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

View of Rouen from the clock tower, Normandy, France, Europe

Haspelturm (Hexenturm) Tower, Kloster Maulbronn Abbey, UNESCO World Heritage Site, Black Forest, Baden-Wurttemberg, Germany, Europe

Rooftop of San Francisco Church, La Paz, Bolivia, South America

Alberobello region, Apulia (Puglia), Italy

Patio de los Naranjos and the Mezquita Cathedral seen from its bell tower, UNESCO World Heritage Site, Cordoba, Andalucia, Spain, Europe

Neumunster Abbey at Lower City Grund, former battlement, old town, UNESCO Wolrd Heritage Site, Luxembourg City, Grand Duchy of Luxembourg, Europe

Alberobello, typical houses, Apulia (Puglia), Italy

Neumunster Abbey at Lower City Grund, former battlement, old town, UNESCO Wolrd Heritage Site, Luxembourg City, Grand Duchy of Luxembourg, Europe

Alberobello, typical houses, Apulia (Puglia), Italy

Stave church, Borgund, Western Fjordlands, Norway, Scandinavia, Europe

Tourists on Charles Bridge, UNESCO World Heritage Site, Prague, Czech Republic, Europe

San Bartolomeo del Mare, Italian Riviera, Liguria, Italy

Bukhara, view beyond Ruler's Fort, Uzbekistan, Central Asia

The Forbidden City, Beijing, China, Asia

Trinity of the Mount of Light, UNESCO World Hetitage Site, Debre Berhan Selassie Church, Gonder, Ethiopia, Africa

Coricancha and Santo Domingo Convent, UNESCO World Heritage Site, Cusco (Cuzco), Peru, South America

Old terracotta rooftops and stone houses in Viviers, Ardeche, France, Europe

View from Al-Attarine Madrasa of green tiled roofs of Al-Karaouine, University of al-Qarawiyyin and Mosque, Medina of Fes, UNESCO, Morocco

View from Al-Attarine Madrasa of green tiled roofs of Al-Karaouine, University of al-Qarawiyyin and Mosque, Medina of Fes, UNESCO, Morocco

View from Al-Attarine Madrasa of green tiled roofs of Al-Karaouine, University of al-Qarawiyyin and Mosque, Medina of Fes, UNESCO, Morocco

Roman Forum, Agora of Athens, Athens, Greece

Monemvasia island historic stone houses and churches, Monemvasia, Laconia, Greece

View of snow covered mountains, rooftops and Church of Saint Pantalon in Courmayeur in winter, Courmayeur, Aosta Valley, Italian Alps, Italy

View of snow covered mountains and rooftops in Courmayeur in winter, Courmayeur, Aosta Valley, Italian Alps, Italy

The Medina seen from sea wall on the way to the harbour, Essaouira, Morocco

Medinet Habu Temple near Luxor from a hot air balloon, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa

Trulli, traditional houses, Rione Monti area, Alberobello, UNESCO World Heritage Site, Valle d'Itria, Bari district, Puglia, Italy, Europe

View of the Meteora Monasteries, UNESCO World Heritage Site, Thessaly, Greece, Europe

Nature Park Valsesia and the Alta Val Strona with view over the valley with stone roof tops of traditional huts in the foreground, Piedmont, Italian Alps, Italy, Europe

Ancient city view with traditional stone houses, Maria Santissima della Bruna and Sant'Eustachio Cathedral and Church of Saint Peter Barisano at sunset, Matera, Basilicata, Italy, Europe

Groznjan, Istria, Croatia

Elevated view of Cusco (Cuzco) Cathedral and Church of the Society of Jesus, UNESCO, Cusco (Cuzco), Cusco Province, Cusco Region, Peru, South America

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

Historic stone houses roof tiles, Monemvasia, Laconia, Greece

Monemvasia island historic stone houses and churches, Monemvasia, Laconia, Greece

Monemvasia island historic stone houses and churches, Monemvasia, Laconia, Greece

Picturesque Shanxiabao village, 800 years old, Wuyi County, Jinhua City, Zhejiang Province, China

View over Old Town from Clock Tower, Sighisoara, UNESCO, Transylvania, Romania

Historic stone houses in Chryssafitissa square, Monemvasia, Laconia, Greece

Monemvasia island historic stone houses and churches, Monemvasia, Laconia, Greece

Monemvasia island historic stone houses and churches, Monemvasia, Laconia, Greece

Monemvasia island historic city castle, Monemvasia, Laconia, Greece

Monemvasia island historic stone houses and churches, Monemvasia, Laconia, Greece

Palazzo dei Consoli (Palace of the Consuls) at sunset, Gubbio, Umbria, Italy

Medina, UNESCO, Fes, Morocco

Temple of the Golden Pavilion, Kyoto, Japan

City seen from north with Cathedral (left) and Palazzo Ducale (right), Urbino, Marche, Italy, Europe

Old Town, UNESCO World Heritage Site, Urbino, Marche, Italy, Europe

Typical chimney in front of the church of Saint Cosmas and Saint Damian dating from the 14th century, Lastovo town, Lastovo island, Croatia, Southeast Europe

Historic stone houses roof tiles, Monemvasia, Laconia, Greece

Medinet Habu Temple near Luxor from a hot air balloon, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa

Monemvasia island historic stone houses and churches, Monemvasia, Laconia, Greece

Aerial of the Castell de Capdepera, Mallorca, Balearic islands, Spain, Mediterranean, Europe

Portico of the Caryatids, Erechtheion, Acropolis, UNESCO World Heritage Site, Athens, Greece, Europe