Unique scientific project unifying scientitsts of present modern countries: Norway, Sweden, Finland, Estonia,
Latvia, Lithuania, Belarus, Ukraine, Moldova, Russia was carried out in the first half of the 19th century. Results obtained
for the mentioned period were very accurate especialy considering the size of the project and instruments used
for the measurements.
Network of triangulation of 2820 km lenght running from Danube mouth till Arctic Ocean also called Struve Geodetic
Arc was built and measured in 1816–1852. That was the longest and most accurate measured meridian arc in 19th
century which measurements data were used during the century for computing and improving parameters of the Earth
elipsoid.
Geodetic points of Struve Geodetic Arc were listed to the World Heritage List in 2005. Three points located in
Meškonys, Paliepiukai and Gireišiai were commemorated in Lithuania. The Coordinating Committee of Struve Geodetic
Arc was created for colaboration, spreading information for wider public, exchange of the best practice for preservation
of Struve Geodetic Arc points. Practice, experience and problems related to the World Heritage List objects preservation
are presented and analyzed in this publication.