Olentangy Caverns | Rock & Gem Gift Shop

If you’ve got kids who burn through energy fast, this place in Delaware will actually keep them busy for a solid few hours. The climbing structure and treasure maze are legit crowd-pleasers — not just filler attractions — and the gem mining tends to hook kids way longer than you’d expect. Throw in a petting zoo, walking paths, and picnic tables and you’ve got a full afternoon without having to drive anywhere else. It’s one of those spots that feels like a local secret even though it’s been here forever.