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Basis-Bonn 1847

Where History Meets Geodesy

Counts toward these achievements:

Bonn: First Steps10 pts

Bonn: Explorer25 pts

Bonn: Insider50 pts

In Bonn-Auerberg, along Kölnstraße, you'll find a captivating piece of technological history: the Basis Bonn from 1847. This geodetic baseline, marked by charming points like the cast-iron table with inscription, played a crucial role in the Rhenish triangulation. The easily accessible site offers not just a glimpse into the past, but also an encounter with the precision and elegance of 19th-century surveying technology.

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Did you know?

The cast iron table with the inscription 'BASIS BONN 1847' is a technological historical monument that remains wheelchair accessible despite its historical significance.

Quick Facts

Wheelchair Access: Fully accessible

Guided Story

Feel the cool touch of cast iron and imagine Johann Jakob Baeyer standing here in 1847, about to embark on an ambitious surveying journey. Look around and feel the history in the air. Right in front of you, the neo-Gothic chapel whispers stories of a time when scientists achieved greatness with simple tools. Turn to your south, and you'll spot St. Josef's Church, a silent witness to this historic line. Behind you, in the distance, lies the Sportpark Nord. But here, at this very spot, the precision of surveying was tested and proven. It's a place that invites you to close your eyes and let the past come alive.