Flat Fork Creek Park
✓ Last confirmed for the 2025 season
Where: 16141 E 101st Street, Fishers, Indiana
When: typically open in warm months (check before visiting)
Hours: typically daylight hours
Cost: free
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Famous for its custom-built treehouses, this year-round park adds more than five miles of hiking and mountain-biking trails, a fishing pond, and a sledding hill. It is one of the most distinctive play destinations on the northeast side of the metro.