French: Arc géodésique de Struve
The Struve Geodetic Arc is a World Heritage site in Ukraine and Sweden and Russian Federation and Moldova and Republic of and Lithuania and Latvia and Estonia and Belarus defined by the UNESCO in 2005 and definitely a recommended cultural sightseeing location.
It is on position 748 (592, 270) in our monthly survey..

"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 astronomer Friedrich Georg Wilhelm Struve, which represented the first accurate measuring of a long segment of a meridian. This helped to establish the exact size and shape of the 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, iron cross, cairns, or built obelisks."
Copyright © 1992 2014 UNESCO/World Heritage Centre. All rights reserved."

Criteria:

(ii)(iii)(vi)

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