The Top 8 Natural Monuments in Winneshiek County
Winneshiek County’s landscape is a beautiful place to explore — something that you can best experience by visiting one of our 8
beautiful natural monuments in Winneshiek County. 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!
beautiful natural monuments in Winneshiek County. 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: December 9, 2025
Decorah Impact Crater Marker
Highlight • Monument
About 465 to 470 million years ago, a meteorite struck near present-day Decorah, Iowa, creating a 3.5-mile (5.6 km) wide impact crater buried beneath the city's surface.
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Dunning's Spring Waterfall
Highlight • Waterfall
Park in the gravel area just south of the entrance to Dunning’s Spring Park. Walk to the waterfall and be sure to take time to walk across the stone bridge …
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Pulpit Rock
Highlight • Natural Monument
Pulpit Rock, a prominent limestone bluff in Decorah, Iowa, is a picturesque natural landmark in Will Baker Park. This striking geological formation, sculpted by centuries of erosion, offers dramatic views …
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Twin Springs Park
Highlight • Natural Monument
Park anywhere along Twin Springs Road and follow the stream “up river” until the stream disappears into the ground—you have found the source of Twin Springs! Twin Springs park used …
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Cold Water Creek flowing out of a limestone cave
Highlight • Cave
Cold Water Creek is a spring creek in Winneshiek County that flows into a limestone formation, continues through an underground labyrinth of limestone passages, and then reemerges from a limestone …
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Malanaphy Springs Falls
Highlight • Waterfall
The distance to the spring from the small parking lot at the trailhead is one mile.
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Bronze medallion marking "point of impact" of Decorah meteor
Highlight • Monument
The medallion marking the scientific point of impact for the Decorah meteorite was installed at Van Peenen Park in Decorah, Iowa, on or around April 22, 2024. The large bronze …
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Siewers Spring State Park
Highlight • Natural Monument
Siewers Spring, located a mile south of Decorah, is Iowa’s second-largest natural spring. It’s the vital water source for the Chuck Gipp Decorah Fish Hatchery, where rainbow trout are raised …
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