Photo credits
Gelsenkirchen-Erle,_leiding_langs_de_Emscher_IMG_8418_2018-09-01_12.05
Gelsenkirchen-Erle, pipeline along the Emscher
800px-1482_Cosmographia_Germanus
The world map from Cosmographia Germanus
995px-Elakala_Waterfalls_Swirling_Pool_Mossy_Rocks
https://commons.wikimedia.org/wiki/File:Elakala_Waterfalls_Swirling_Pool_Mossy_Rocks.jpg
1024px-USS_Constellation_(1854)_ship%u2019s_wheel(1)
1024px-El_yunque_de_frente,_Alcalá_de_Henares,_Madrid,_España,_2015
https://commons.wikimedia.org/wiki/File:El_yunque_de_frente,_Alcal%C3%A1_de_Henares,_Madrid,_Espa%C3%B1a,_2015.JPG