The location of the geographical centre of Europe depends on the definition of the borders of Europe, mainly whether remote islands are included to define the extreme points of Europe, and on the method of calculating the final result. Thus, several places claim to host this hypothetical centre. The first official declaration of the Centre of Europe was made in 1775 by the Polish royal astronomer and cartographer Szymon Antoni Sobiekrajski, and calculated to be in the town Suchowola near Białystok in modern north-eastern Poland. The method used was that of calculating equal distances from the extreme points of Europe: in Portugal (W) vs. Central Ural (E), in Norway (N) vs. Southern Greece (S), (islands were not taken into consideration). There is a monument commemorating that fact in Suchowola 53°34′39″N 23°06′22″E / 53.57750°N 23.10611°E.
After a re-estimation of the boundaries of the continent of Europe in 1989, Jean-George Affholder, a scientist at the Institut Géographique National (French National Geographic Institute) determined that the geographic centre of Europe is located at 54°54′N 25°19′E / 54.900°N 25.317°E. The method used for calculating this point was that of the centre of gravity of the geometrical figure of Europe. This point is located in Lithuania, near the village of Purnuškės. A monument, composed by the sculptor Gediminas Jokūbonis and consisting of a column of white granite surmounted by a crown of stars, was erected at the location in 2004. An area of woods and fields surrounding the geographic centre point and including Lake Girija, Bernotai Hill, and an old burial ground, was set aside as a reserve in 1992. The State Tourism Department at the Ministry of Economy of Lithuania has classified the Geographic Centre monument and its reserve as a tourist attraction. 17 km away lies Europos Parkas, Open Air Museum of the Centre of Europe, a sculpture park containing the world's largest sculpture made of TV sets.