Struve Geodetic Arc
- This article is an itinerary.
The Struve Arc is a chain of survey triangulations stretching from Hammerfest in Norway to the Black Sea, through ten countries and over 2,820km. These are points of a survey, carried out between 1816 and 1855 by the astronomer Friedrich Georg Wilhelm Struve, which represented the first accurate measuring of a long segment of a meridian. This helped establish the exact size and shape of our planet and marked an important step in the development of earth sciences and topographic mapping. It is an extraordinary example of scientific collaboration among scientists from different countries, and of collaboration between monarchs for a scientific cause. The original arc consisted of 258 main triangles with 265 main station points. The listed site includes 34 of the original station points, with different markings, i.e. a drilled hole in rock, an iron cross, cairns, or built obelisks.
Many of the inscribed sites are small posts in fields and may not reward a visit. However the focal point of the arc is the Dorpat Observatory in Tartu, Estonia
Get in 
The points of the arc run over 2,820 km. from above the Arctic Circle to the Black Sea, making it the longest inscription on the World Heritage List. Due to the vast distances there are very many ways to get to see it.
PAJTAS-VAARA Tynnyrilaki, Kiruna, Norrbottens län, Sweden N68 15 18 E22 58 59
KERROJUPUKKA Jupukka, Pajala, Norrbottens län, N67 16 36 E23 14 35
PULLINKI Pullinki, Övertorneå, Norrbottens län, N66 38 47 E23 46 55
PERRA-VAARA Perävaara, Haparanda, Norrbottens län, N66 01 05 E23 55 21
WOIBIFER Võivere, Avanduse, Lääne-Viru, N59 03 28 E26 20 16
KATKO Simuna, Avanduse, Lääne-Viru, Estonia N59 02 54 E26 24 51
DORPAT Tartu Observatory, Tartu, N58 22 44 E26 43 12
JACOBSTADT Jekabpils, Region Jekabpils, N56 30 05 E25 51 24
MESCHKANZI Meškonys, Nemencine, Eastern Lithuania, Lithuania N54 55 51 E25 19 00
BERESNÄKI Paliepiukai, Nemežis, Eastern Lithuania, Lithuania N54 38 04 E25 25 45
TUPISCHKI Tupishki, Oshmyany, Grodno Oblast, N54 17 30 E26 02 43
LOPATI Lopaty, Zelva, Grodno Oblast, N53 33 38 E24 52 11