The Geometric Centre of the Republic of Slovenia (Slovene: Geometrično središče Republike Slovenije, GEOSS) is the geometric centre of the country. Its geographic coordinates are (46°07′11.8″N14°48′55.2″E) and its elevation is 644.842 m. It lies in the hamlet of Spodnja Slivna near Vače in the municipality of Litija. Since 4 July 1982, it has been marked with a memorial stone designed by the architect Marjan Božič.