Struve Geodetic Arc

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.

Inscribed as an official UNESCO World Heritage Site in 2005, this landmark stands as one of the most prominent cultural wonders in Latvia.

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  Estimated Admission: Standard adult entrance tickets generally range from $15 to $30 USD (or equivalent in local currency). Regional museum and heritage passes may offer discounts.
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  Best Season to Visit: Spring and Autumn provide optimal weather conditions and moderate visitor crowds.
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  Recommended Duration: Plan 3 to 5 hours to fully experience the site and surrounding scenic viewpoints.

Access to Struve Geodetic Arc is readily available from major transport hubs across Latvia. Guided tours, regional trains, and rental vehicles offer convenient access depending on your preferred travel style.