Kilometre-marker on the 2W road leading to Pakbeng, Laos, Southeast Asia

A general view of the Athabasca Glacier, a six kilometre tongue of ice flowing from the Columbia Icefield. It is the best-known glacier in the Canadian Rockies and is situated in Jasper National Park, Alberta, Canada.

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

Aerial view of Lake Constance and the Seerhein, also Rhine funnel with the city of Constance and the old Rhine bridge, where the Rhine officially begins at kilometre zero, district of Constance, Baden-Württemberg, Germany, Europe

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

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

Street Bridge, a two-kilometre-long bridge crossing the firth of Forth Fjord near Edinburgh, Scotland, Great Britain, Europe

kilometro rosso, bergamo, italy

kilometro rosso, bergamo, italy

kilometro rosso, bergamo, italy

kilometro rosso, bergamo, italy

Hikers make their way up Uluru or Mt. Ayers in the Australian Outback. Located in the centre of Australia, Uluru (Ayers Rock) is the world's biggest monolith. It's 3.6 kilometres long, 2 kilometres wide and has a 9.4 kilometre circumference. Made of arkosic sandstone, Uluru changes colour in different lights, particularly at sunrise and sunse.

Ireland, Road Sign To Dublin

The Hverfjall crater, a tephra cone or tuff ring volcano in Northern Iceland. The crater is approximately 1 kilometre in diameter; Skutustadahreppur, Northeastern Region, Iceland

Close-Up Of Road Sign Directions To Restaurant In Killarney National Park; Killarney County Kerry Ireland

Road Sign Directions To Various Locations In Killarney National Park; Killarney County Kerry Ireland