Slums within a kilometer of the Taj Mahal, Agra, Uttar Pradesh, India

Markt Schwaben, GER, 26. June 2006 - A car passes a sign which marks the begin of a speed limited zone in Markt Schwaben Bavaria Germany.

Coach with tourists in the Siq, the one kilometer long canyon that leads to the Nabataean city Petra, Unesco World Heritage Site, near Wadi Musa, Jordan, Middle East, Orient

Coach with tourists in the Siq, the one kilometer long canyon that leads to the Nabataean city Petra, Unesco World Heritage Site, near Wadi Musa, Jordan, Middle East, Orient

Plaque in pavement with map and zero kilometre, zero kilometre stone, fundamental point, inscription, Plaza Puerta del Sol, Madrid, Spain, Europe

Gravel road Ruta 40 with speed limit 20 Km/h, behind Lago Cardiel and Andes, near Perito Moreno, province Santa Cruz, Patagonia, Argentina, South America

Road in Denali National Park, the first 24 kilometres are paved, Alaska, USA, North America

Signpost showing kilometer distances to various directions, Alice Springs, Northern Territory, Australia