Porlammi

Porlammi is a registered archaeological site and survey marker located in Lapinjärvi in southern Finland. The site marks a precise point used by surveyors in the 19th century to measure and map large areas of land across Europe.

The site served as a measurement point in a major 19th-century project that connected European countries through a chain of survey markers. This network helped surveyors create accurate maps of vast continental areas for the first time.

This registered archaeological site represents Finland's commitment to preserving locations that contribute to the understanding of scientific and historical measurements.

The site is located in a rural woodland area that requires some walking to reach. Visitors should wear sturdy shoes and be prepared for uneven ground, particularly when soil is damp.

The marker is part of a cross-border measurement network that stretched thousands of kilometers, linking countries from the North Sea to the Black Sea. Few visitors realize that this small Finnish site served as physical proof of one of Europe's most ambitious scientific undertakings.

Location: Lapinjärvi

Part of: Struve Geodetic Arc

GPS coordinates: 60.70483,26.00346

Latest update: December 12, 2025 12:01