Milliken Park
✓ Verified 2026-summer
Where: 6445 S Clarkson St, Centennial, Colorado
When: typically open in warm months (check before visiting)
Hours: typically daylight hours
Cost: free
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Sitting on the High Line Canal with its own parking lot and restrooms, Milliken's marine-themed structures are shaped like ship bows, joined by spinning monkey bars and a full set of swings for all ages.