The Struve Arc is a chain of survey triangulations stretching from Hammerfest in Norway to the Black Sea, through 10 countries and over 2,820 km. These are points of a survey, carried out between 1816 and 1855 by
The Struve Geodetic Arc, Buildings & Monuments, Hammerfest
Struve Geodetic Arc - Wikipedia
Struve Geodetic Arc For UNESCO World Heritage Travellers
Postcard. UNESCO World Heritage Struve Geodetic Arc in Latvia Map
Struve Geodetic Arc For UNESCO World Heritage Travellers
World Heritage Site Struve Geodetic Arc in Finland
Sweden UNESCO WORLD HERITAGE SITES ~ STRUVES GEODETIC ARC Black
Arc of Meridian monument, Hammerfest, Norway. This monument
UNESCO World Heritage Site - Review of Struve Geodetic Arc
Four points on the Struve Geodetic Arc - Riksantikvaren