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The Top 4 Natural Monuments around Harlingen

Harlingen’s landscape is a beautiful place to explore — something that you can best experience by visiting one of our 4

beautiful natural monuments around Harlingen. To help you find the one for, you can see all the details you need to explore the best natural monuments, and better plan your next outdoor adventure!

Last updated: November 13, 2025

Wadden Sea

Highlight • Natural

The Wadden Sea (Frisian: Waadsee, German: Wattenmeer) is a marginal sea between the Wadden Islands and the North Sea on one side and the mainland of the Netherlands, Germany and Denmark on the other.

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Terp of Achlum and St. Gertrude's Church

Highlight (Segment) • Historical Site

The church of Achlum is open to visitors on Saturdays from July to mid-September from 1:30 to 5:00. The mound was created in the Iron Age from around 500 BC. …

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The Oort Cloud – 11fountains

Highlight • Monument

This fountain is an ode to astronomer Jan Hendrik Oort. He thought that a "cloud" of billions of comet-like objects is moving around our solar system. This was a breakthrough in astronomy.

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... a very nice spot for a long-distance view and even with a free parking space. On the dike you have a great 360° panoramic view ...😎

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Other adventures around Harlingen

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Extend your search for the best caves by checking out these guides of the top ones around Harlingen:

OoststellingwerfWeststellingwerfOpsterlandVlielandNoardeast-FryslânDongeradeelTerschellingHeerenveenKollumerland C.A.AchtkarspelenAmelandDuinen AmelandFerwerderadielSmallingerlandDe Fryske MarrenDantumadeelSúdwest-FryslânGaasterlân-SleatNijefurdTytsjerksteradielBoarnsterhimSkarsterlânLemsterlandWymbritseradielWaadhoekeSchiermonnikoogWûnseradielHet BildtFranekeradeelMenaldumadeelLeeuwarderadeelLittenseradielBolsward

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