Stavanger harbour, Stavanger, Norway's third largest city and centre of the country's oil industry, Norway, Scandinavia, Europe

Hassan II Mosque, the third largest mosque in the world, Casablanca, Morocco, North Africa, Africa

Hassan II Mosque, the third largest mosque in the world, Casablanca, Morocco, North Africa, Africa

Hassan II Mosque, the third largest mosque in the world, Casablanca, Morocco, North Africa, Africa

Vagen, Stavanger's inner harbour, Stavanger, Norway's third largest city and centre of the country's oil industry, Norway, Scandinavia, Europe

The Underground of the Flavian Amphitheater, the third largest Roman amphitheater in Italy, Pozzuoli, Naples, Campania, Italy, Europe

View over city with the Hassan II Mosque, the third largest mosque in the world in the bakcground, Casablanca, Morocco, North Africa, Africa

Hassan II Mosque, the third largest mosque in the world, Casablanca, Morocco, North Africa, Africa

Hassan II Mosque, the third largest mosque in the world, Casablanca, Morocco, North Africa, Africa

Vagen, Stavanger's inner harbour, Stavanger, Norway's third largest city and centre of the country's oil industry, Norway,Scandinavia, Europe

Aerial photo of the Himalayas with the world's third highest mountain, Kanchenjunga, Bhutan, Asia

The Underground of the Flavian Amphitheater, the third largest Roman amphitheater in Italy, Pozzuoli, Naples, Campania, Italy, Europe

Hassan II Mosque, the third largest mosque in the world, Casablanca, Morocco, North Africa, Africa

Mount Teide, the third active largest volcano in the world and the tallest mountain in Spain, UNESCO World Heritage Site, Teide, Tenerife, Canary Islands, Spain, Atlantic, Europe

Third largest rock arch in the world, Ennedi Plateau, UNESCO World Heritage Site, Ennedi region, Chad, Africa

Tourists at the Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America

Pre-dawn light on the Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America

Tourists at the Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America

Pre-dawn light on the Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America

Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America

Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America

Aerial of El Bernal, third largest monolith in the world, Queretaro, Mexico, North America

Lake Annecy (Lac d'Annecy), the third largest lake in France and known as Europe's cleanest lake, Haute-Savoie, France, Europe

Tourists at the Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America

Tourists at the Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America

Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America

Tourists at the Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America

Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America

Pre-dawn light on the Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America

Aerial of El Bernal, third largest monolith in the world, Queretaro, Mexico, North America

View from the outer bay of the third largest city in Greenland, Ilulissat (Jakobshavn), Greenland, Polar Regions

Tourists at the Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America

Lake Annecy (Lac d'Annecy), the third largest lake in France and known as Europe's cleanest lake, Haute-Savoie, France, Europe

View from the outer bay of the third largest city in Greenland, Ilulissat (Jakobshavn), Greenland, Polar Regions

View from the outer bay of the third largest city in Greenland, Ilulissat (Jakobshavn), Greenland, Polar Regions

Aerial photo of the Himalayas with the world's third highest mountain, Kanchenjunga, Bhutan, Asia

Dormition of the Mother of God Cathedral in Varna, the third largest city in Bulgaria, Europe

The beach along the Black Sea coast of Varna, the third largest city in Bulgaria, Europe

Ceiling chandeliers in the prayer hall of the Sheikh Zayed Mosque, third largest mosque in the world, Abu Dhabi, United Arab Emirates, Arabia, Middle East, Orient

Prayer hall of the Sheikh Zayed Mosque, third largest mosque in the world, Abu Dhabi, United Arab Emirates, Arabia, Middle East, Orient

LINZ, AUSTRIA: Holy Trinity column on the Hauptplatz or main square in the centre of Linz, Austria. Linz is the third largest city of Austria

Prayer hall of the Sheikh Zayed Mosque, third largest mosque in the world, Abu Dhabi, United Arab Emirates, Arabia, Middle East, Orient

Prayer hall of the Sheikh Zayed Mosque, third largest mosque in the world, Abu Dhabi, United Arab Emirates, Arabia, Middle East, Orient

Western grey kangaroo (Macropus fuliginosus), on Kangaroo Island in the Flinders Chase National Park. Kangaroo Island is the third largest island of Australia and famous for the national parks and their wildlife. Australia, South Australia

Western grey kangaroo (Macropus fuliginosus), on Kangaroo Island in the Flinders Chase National Park. Kangaroo Island is the third largest island of Australia and famous for the national parks and their wildlife. Australia, South Australia

High Mountain Rangers Tom Ditola and David Weber are taking a rest on the West Rib on Mount McKinley, Alaska. Mount Hunter in the background. They are above the clouds in blue sky and the sun is shining. Mount McKinley, native name Denali, is the highest mountain peak in North America, with a summit elevation of 20,321 feet (6,194 m) above sea level. At some 18,000 feet (5,500 m), the base-to-peak rise is considered the largest of any mountain situated entirely above sea level. Measured by topographic prominence, it is the third most prominent peak after Mount Everest and Aconcagua. Located in the Alaska Range in the interior of the U.S. state of Alaska, McKinley is the centerpiece of Denali National Park and Preserve. Every climbing season High Mountain Rangers of the Denali National Park Service are called to help climbers in need. If possible the patient is brought down to base camp on foot, only in life threatening conditions a helicopter is called to evacuate the patient to a hospital in Anchorage.

Mountain ranger Brian Scheele on this way to Windy Corner on Mount McKinley, also know as Denali, in Alaska. He is pulling a sled, that together with his heavy backpack is containing all the gear like tents, clothing and food. Every climbing season High Mountain Rangers of the Denali National Park Service are called to help climbers in need. If possible the patient is brought down to Basecamp on foot, only in life threatening conditions a helicopter is called to evacuate the patient to a hospital in Anchorage. Mount McKinley, native name Denali, is the highest mountain peak in North America, with a summit elevation of 20,321 feet (6,194 m) above sea level. At some 18,000 feet (5,500 m), the base-to-peak rise is considered the largest of any mountain situated entirely above sea level. Measured by topographic prominence, it is the third most prominent peak after Mount Everest and Aconcagua. Located in the Alaska Range in the interior of the U.S. state of Alaska, McKinley is the centerpiece of Denali National Park and Preserve.

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture main flower market off of Calderon Park, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture Cathedral Tower, dome and colonial buildings, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture activity in the main produce market, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture colonial homes along Rio Tomebamba, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture Cathedral Tower, dome and colonial buildings, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture main flower market off of Calderon Park, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture activity in the main produce market, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture Cathedral Tower and colonial buildings, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city Museo Monasterio de la Concepcion, spectacular 4' high, folk art nativity scene, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, highschool students with flowers going to Cathedral for special mass for students, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, highschool students in procession to Cathedral for special mass just for students, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture main flower market off of Calderon Park, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture student couple walking together on street, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture main flower market off of Calderon Park, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture student in flower market off Calderon Park, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture Cathedral and photographers in Calderon Park, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture colonial buildings on cobblestone street, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture Cathedral and activity in Calderon Park, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture woman selling religious items in Cathedral, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture children in flower market off Calderon Park, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture young girls in procession for 1st Communion, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture main flower market off of Calderon Park, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest and most beautiful city, famous for colonial architecture Cathedral's domes and spires, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture students in flower market off Calderon Park, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture student in flower market off Calderon Park, Highlands, Ecuador

Cuenca World Heritage City & Ecuador's third largest city, famous for its colonial architecture man carrying a gramophone on street, Highlands, Ecuador

Sei whale (Balaenoptera borealis) is a baleen whale, the third-largest rorqual after the blue whale and the fin whale. Azores, Portugal, Atlantic Ocean.