Wall of water and entrance to the Oceanarium (Oceanario de Lisboa), Park of Nations (Parque das Nacoes), in Lisbon, Portugal, Europe

Parade of nations carving, Apadana Palace staircase, archaeological site, Persepolis, Iran, Middle East, Asia

Native American faces, detail of large mural, Chemainus near Nanaimo, Vancouver Island, Canada, North America

Petroglyphs etched in sandstone, symbols, prehistoric and historic rock art, wall drawings by the Anasazi Native Americans, Monument Valley, Navajo Tribal Park, Navajo Nation Reservation, Arizona, Utah, United States of America, USA

Petroglyphs etched in sandstone, symbols, prehistoric and historic rock art, wall drawings by the Anasazi Native Americans, Monument Valley, Navajo Tribal Park, Navajo Nation Reservation, Arizona, Utah, United States of America, USA

Petroglyphs etched in sandstone, symbols, prehistoric and historic rock art, wall drawings by the Anasazi Native Americans, Monument Valley, Navajo Tribal Park, Navajo Nation Reservation, Arizona, Utah, United States of America, USA

Wall painting with white grizzly and orca, community center, First Nation village of the Gitga'ata people, Tsimshian, Hartley Bay, British Columbia, Canada, North America

Wall painting with white grizzly and orca behind a fireplace, community center, First Nation village of the Gitga'ata people, Tsimshian, Hartley Bay, British Columbia, Canada, North America

Flag in the national colours of Ukraine hanging from the letter U of Russia, in memory of the Ukrainian concentration camp victims, Wall of Nations, Ravensbrueck Memorial, former woman's concentration camp, Fuerstenberg Havel, Brandenburg, Germany, Europe

Wall with mourning wreath for the Russian concentration camp victims, Soviet Union inscription, Wall of Nations, Ravensbrueck Memorial, former concentration camp for woman, Fuerstenberg Havel, Brandenburg, Germany, Europe

Wall with grave lights in memory of the Polish concentration camp victims, inscription Poland, Wall of Nations, Memorial, Ravensbrueck Women's Concentration Camp, Fuerstenberg-Havel, Brandenburg, Germany, Europe

Native Heritage mural by Paul Ygartua, Chemainus, Vancouver Island, British Columbia, Canada