Naveta d'Es Tudon, megalithic chamber tomb, 1130-820 BC, Menorca, Balearic Islands, Spain, Mediterranean, Europe

Irregular blocky lava (a'a) and cinder cones of the volcanic landscape of Timanfaya National Park, Lanzarote, Canary Islands, Spain, Atlantic Ocean, Europe

Sandstone pebbles, Aberdeenshire, Scotland

`Orion operation´ by Chota, Street art, mural, graffiti, Comuna 13, Medellín, Colombia

Chota and his mural `Orion Operation´, Street art, graffiti, Comuna 13, Medellín, Colombia

Khaled 13 years old, picking tomatoes harvest, day laborer, child labour, syrian refugee, Arsal, Bekaa Valley, Lebanon

Sahar at right and Houriye at left, both 15 years old, Girls picking chards harvest, day laborers, child labour, syrian refugees, in Bar Elias, Bekaa Valley, Lebanon

Street art, mural, graffiti, Comuna 13, Medellín, Colombia

jeihhco Castaño, social leader, Hip Hopper, member of rap band C15, co-founder of `La Casa de Hip Hop Kolacho´, from Comuna 13, Medellín, Colombia

Iftikar, 12 years old, and his companions picking the potato harvest, day laborers, child labour, syrian refugees, in Bar Elias, Bekaa Valley, Lebanon

Friends, Street art, mural, graffiti, Comuna 13, Medellín, Colombia

Black and White C-13, dancers of Hip Hop, Street art, Comuna 13, Medellín, Colombia

Minors picking the potato harvest, day laborers, child labour, syrian refugees, in Bar Elias, Bekaa Valley, Lebanon

Street art, mural, graffiti, Comuna 13, Medellín, Colombia

Khaled 13 years old, picking tomatoes harvest, day laborer, child labour, syrian refugee, Arsal, Bekaa Valley, Lebanon

At right Khaled 13 years old. At left his brother Ibrahim 15 years old, picking cucumbers harvest, day laborers, child labour, syrian refugees, Arsal, Bekaa Valley, Lebanon

Sahar at left and Houriye at right, both 15 years old, Girls picking chards harvest, day laborers, child labour, syrian refugees, in Bar Elias, Bekaa Valley, Lebanon

Recycled plastic bottle tops, Mozia, Sicily, Italy

Street art, mural, graffiti, Comuna 13, Medellín, Colombia

Children picking the potato harvest, day laborers, child labour, syrian refugees, in Bar Elias, Bekaa Valley, Lebanon

Teenagers who were child soldier during their childhood that belonged to armed groups of the Colombian conflict. The international day against the child soldier is known worldwide also as the day of the red hand, colombia

Street art, mural, graffiti, Comuna 13, Medellín, Colombia

Ahmad, 16 years old, works with metals and dangerous machinery, child labour, syrian refugee, in Arsal, Bekaa Valley, Lebanon

Street art, mural, graffiti, Comuna 13, Medellín, Colombia

Black and White C-13, dancers of Hip Hop, Street art, Comuna 13, Medellín, Colombia

Views, Comuna 13, Medellín, Colombia

Women working, picking chards harvest, day laborers, syrian refugees, in Bar Elias, Bekaa Valley, Lebanon

jeihhco Castaño, social leader, Hip Hopper, member of rap band C15, co-founder of `La Casa de Hip Hop Kolacho´, from Comuna 13, Medellín, Colombia

Views of Comuna 13, Medellín, Colombia

Street art, mural, graffiti, Comuna 13, Medellín, Colombia

Street art, mural, graffiti, Comuna 13, Medellín, Colombia

Street art, mural, graffiti, Comuna 13, Medellín, Colombia

Street art, mural, graffiti, Comuna 13, Medellín, Colombia

Tourists, Street art, mural, graffiti, Comuna 13, Medellín, Colombia

Kabala, cultural manager, Comuna 13, Medellín, Colombia

Tourist, Street art, mural, graffiti by Chota, Comuna 13, Medellín, Colombia

Asteroid, 21 Lutetia

Giant's Causeway, County Antrim, Ireland, Basalt Columns

Building made of containers lined up in a row, powered by pipes and electric cables. The summer camp is made up of containers assembled together. It was built in the early 1990s. Since then, irregular ground settlement has caused the building to deform. It is now used as a summer dormitory. Concordia Antarctic Research Station, Dome C plateau, East Antarctica.