It was replaced in El Capitolio by a replica in 1973. The original diamond, said to have belonged to Tsar Nicholas II of Russia and have been sold to the Cuban state by a Turkish merchant, was stolen on March 25, 1946, and mysteriously returned to the President, Ramón Grau San Martín, on June 2, 1946. Embedded in the floor in the centre of the main hall is a replica 25 carat (5 g) diamond, which marks kilometre zero. The diamond in El Capitolio, Havana, marking the Cuban Kilometre ZeroĬuba's kilometre zero is in its capital Havana in El Capitolio. In Western Australia, road distances are measured from point zero, which is by the old Treasury Building on the corner of Cathedral Avenue and St George's Terrace in Perth. The General Post Office building in Melbourne traditionally serves this purpose in Victoria. For the railway, it is at platform 1 of Sydney Central Station. The obelisk lists the distances to various locations in New South Wales at the time. In the state of New South Wales, highway distances ( mileages) were traditionally measured from a sandstone obelisk in Macquarie Place in Sydney, designed by Francis Greenway in 1818. Highways in Australia are usually built and maintained by the states and territories. An image of Our Lady of Luján (honored on the monolith as 'the patron saint of the national road network') appears on the monolith's north face, a relief map of Argentina is on the south face, plaques in honor of José de San Martín are west, and on its eastern side, the date of the decree and the name of the relevant authorities. The work of the brothers Máximo and José Fioravanti, the structure was placed on the north side of Plaza Lorea on Octoit was moved to its present location on May 18, 1944. Argentina marks kilometre zero with a monolith in Plaza Congreso in Buenos Aires.

Kilometre zero