Park & nature
Thornton Quarry
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Thornton Quarry, located in Thornton, Illinois (near Chicago), is one of the largest limestone quarries in the world, spanning over 500 acres and reaching depths of 450 feet. Guided tours take visitors to the quarry's edge and into the processing area, showcasing the massive scale of operations and the geological layers that date back millions of years. It's a fascinating stop for geology enthusiasts and those curious about industrial heritage.
Don't miss
- Take a guided tour to the quarry's rim for panoramic views.
- Learn about the quarry's role in building Chicago's infrastructure.
- See the fossil-rich limestone layers up close.
Tickets & tours
Ways to visit Thornton Quarry
You can usually visit on your own. A tour is worth it for transport, a guide, or combining nearby sights into one day.
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